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Write down the information you found about a simple machine.

Take into account these 3 items before developing the activity:

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https://www.ducksters.com/science/simple_machines.php

The wheel and axle
Is a wheel with a rod in the middle to lift or move loads, sometimes the machine works as a lever to multiply the force, in other situations it is used to move things easily

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A pulley has a wheel that allows you to change the direction of a force. As you pull down on the rope, the wheel turns and whatever is attached to the other end goes up.The pulley helps you to move the load or change direction of the force. By : Eduardo Llanos

1. https://www.generationgenius.com/simple-machines-reading-material/

2.https://www.ducksters.com/science/simple_machines.php

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1. A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion. Pulleys with grooved rims are called sheaves.

2. A pulley has a wheel that allows you to change the direction of a force. As you pull down on the rope, the wheel turns and whatever is attached to the other end goes up.
1.https://www.britannica.com/technology/simple-machine/The-pulley
2.https://www.generationgenius.com/simple-machines-reading-material/.
By: Ariadna Estefania Cieza Bautista

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The lever  it serves The lever is made up of a straight rigid object like a board or a bar which pivots on a turning point called a fulcrum. Levers make work easier by using leverage which multiplies the force.

Link https://www.ducksters.com/science/simple_machines.php

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1. simple machine make work easier
2. it is easier to move heavi things up a ramp
3. a ramp is a common example of an inclined plain

by: juan pablo
link: https://www.generationgenius.com/simple-machines-reading-material/

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Incline Planes By Taddeo It helps to move heavy things to different places it takes time to go but it is easier to move

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Incline Planes By Taddeo It helps to move heavy things to different places it takes time to go but it is easier to move

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1. By placing the thin end of the wedge onto a log, you can hit it with a hammer.

2. The wedge changes the direction of the force and it pushes the log apart.

3. A wedge is an object with a slanted edge which is sharp. It can be used to cut materials apart.

Idea 1 and 2: https://www.generationgenius.com/simple-machines-reading-material/

Idea 3: https://www.coolkidfacts.com/simple-machines-facts/

By: Mateo Aparicio Velit

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An incline plane wrapped around a center rod.an example of a screw is a speed staircase

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An incline plane wrapped around a center rod.an example of a screw is a speed staircase

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by airam

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https://www.generationgenius.com/simple-machines-reading-material/
A simple machine that has a gently sloped surface so it can be used to move objects upwards with less force. Ramps are examples of inclined planes.

by Paulo Montoro

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A simple machine that has a gently sloped surface so it can be used to move objects upwards with less force. Ramps are examples of inclined planes.
An inclined plane wrapped around a center rod. An example of a screw is a spiral staircase.

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The pulley is a wheel and rope that can change the direction of a force. A pulley can move things from a low area to a higher one. As you pull down on the rope, the wheel turns and whatever is attached to the other end goes up.                 https://www.generationgenius.com/simple-machines-reading-material/

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1. When you push down on one side of a lever, the other side goes up.
2.The lever is made up of a straihgt rigid objet like a board or a bar.
3.Simple machines are mechanical devices for appliyng a force and doing work.   https://www.generationgenius.com/simple-machines-reading-material/

https://www.ducksters.com/science/simple_machines.php

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Lever
https://www.ducksters.com/science/simple_machines.php

1.The lever is made up of a straight rigid object like a board

2. Levers make work easier by using leverage which multiplies the force.

3.  When you use a lever, you move a smaller force a longer distance in order to lift a load a short distance.

Emilio León Rado

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If you put two inclined planes back to back, you get a wedge.https://www.ducksters.com/science/simple_machines.php

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Wheel and axle, basic machine component for amplifying force. In its earliest form it was probably used for raising weights or water buckets from wells. Its principal of operation is demonstrated by the large and small gears attached to the same shaft

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Wheel and axle, basic machine component for amplifying force. In its earliest form it was probably used for raising weights or water buckets from wells. Its principal of operation is demonstrated by the large and small gears attached to the same shaft

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By: José Joaquín

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A pulley has a wheel that allows you to change the direction of a force as you pull down on the rope ,the wheel turns and whatever is attached to the other end goes up
https://www.generationgenius.com/simple-machines-reading-material

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A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three types. Also a leverage is a mechanical advantage gained in a mechanical system. It is one of the six simple machines identified by Renaissance scientists.

source:  https://en.wikipedia.org/wiki/Lever#:~:text=The%20lever%20is%20a%20movable,attached%20to%20a%20fixed%20point.&text=It%20shows%20that%20if%20the,lever%20amplifies%20the%20input%20force.
By: Fabiana Yamanija Arze

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A pulley is a wheel on an axle or axle that is designed to support the movement and change of direction of a tensioned cable or belt, or the transfer of power between the axle and the cable or belt.

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A screw is a special kind of inclined plane. It's basically an inclined plane wrapped around a pole. Screws can be used to lift things or to hold them together.   Examples of the screw simple machine include : swivel chairs, jar lids, and, of course, screws.
https://www.ducksters.com/science/simple_machines.php

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A pulley is a wheel thet allows you to change the directiob of a force. As you pull down on the rope, the wheel turns and whatever is attached to the  

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A pulley is a wheel thet allows you to change the directiob of a force. As you pull down on the rope, the wheel turns and whatever is attached to the  

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A screw is a simple machine that is used to match things like wood. the screw can be used to make: Examples:
tables, things that have wood, desks

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Pulley
A pulley is a wheel that allows geyou to change the direction of a force. As you pull down on the rope

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A pulley has a wheel that allows you to change the direction of a force.

https://www.generationgenius.com/simple-machines-reading-material/

The rope fits into the groove and one end of the rope goes around the load.

https://www.ducksters.com/science/simple_machines.php

They can be combined with other pulleys to gain even more of an advantage and move heavier loads.

https://www.coolkidfacts.com/simple-machines-facts/

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screw :screw are inclined planes that are wrapped around a pole which holds things together examples:
- jar lid
-drill bit
- bolt
- light bull
- bottle caps
https://www.coolkidfacts.com/simple-machines-facts

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Lever

Levers can be used to exert a large force over a small distance at one end by exerting only a small force(effort) over a greater distance at the other.

Classification
Simple machine

Components

fulcrum or pivot, load and effort

Examples

see-saw, bottle opener, etc.

A lever ( or ) is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or . A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three types. Also a leverage is a mechanical advantage gained in a mechanical system. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage of the lever. As such, the lever is a mechanical advantage device, trading off force against movement.

The word "lever" entered English about 1300 from Old French, in which the word was levier. This sprang from the stem of the verb lever, meaning "to raise". The verb, in turn, goes back to the Latin levare, itself from the adjective levis, meaning "light" (as in "not heavy"). The word's primary origin is the Proto-Indo-European (PIE) stem legwh-, meaning "light", "easy" or "nimble", among other things. The PIE stem also gave rise to the English word "light".

The earliest evidence of the lever mechanism dates back to the ancient Near East circa 5000 BC, when it was first used in a simple balance scale. In ancient Egypt circa 4400 BC, a foot pedal was used for the earliest horizontal frame loom. In Mesopotamia (modern Iraq) circa 3000 BC, the shadouf, a crane-like device that uses a lever mechanism, was invented. In ancient Egypt technology, workmen used the lever to move and uplift obelisks weighing more than 100 tons. This is evident from the recesses in the large blocks and the handling bosses which could not be used for any purpose other than for levers.

The earliest remaining writings regarding levers date from the 3rd century BCE and were provided by Archimedes. He stated, 'Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.'

A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals the power out, and the ratio of output to input force is given by the ratio of the distances from the fulcrum to the points of application of these forces. This is known as the law of the lever.[citation needed ]

The mechanical advantage of a lever can be determined by considering the balance of moments or torque, T, about the fulcrum. If the distance traveled is greater, then the output force is lessened.

where F ₁ is the input force to the lever and F ₂ is the output force. The distances a and b are the perpendicular distances between the forces and the fulcrum.

Since the moments of torque must be balanced, . So, .

The mechanical advantage of the lever is the ratio of output force to input force,

This relationship shows that the mechanical advantage can be computed from ratio of the distances from the fulcrum to where the input and output forces are applied to the lever, assuming no losses due to friction, flexibility or wear. This remains true even though the horizontal distance (perpendicular to the pull of gravity) of both a and b change (diminish) as the lever changes to any position away from the horizontal.

Levers are classified by the relative positions of the fulcrum, effort and resistance (or load). It is common to call the input force the effort and the output force the load or the resistance. This allows the identification of three classes of levers by the relative locations of the fulcrum, the resistance and the effort:

Class 1: Fulcrum between the effort and resistance: the effort is applied on one side of the fulcrum and the resistance (or load) on the other side, for example, a seesaw, a crowbar or a pair of scissors. Mechanical advantage may be greater than, less than, or equal to 1.

Class 2: Resistance (or load) between the effort and fulcrum: the effort is applied on one side of the resistance and the fulcrum is located on the other side, e.g. in a wheelbarrow, a nutcracker, a bottle opener or the brake pedal of a car, the load arm is smaller than the effort arm, and the mechanical advantage is always greater than one. It is also called force multiplier lever.

Class 3: Effort between the fulcrum and resistance: the resistance (or load) is on one side of the effort and the fulcrum is located on the other side, for example, a pair of tweezers, a hammer, or the jaw. The effort arm is smaller than the load arm. Mechanical advantage is always less than 1. It is also called speed multiplier lever.

These cases are described by the mnemonic fre 123 where the f fulcrum is between r and e for the 1st class lever, the r resistance is between f and e for the 2nd class lever, and the e effort is between f and r for the 3rd class lever.

A compound lever comprises several levers acting in series: the resistance from one lever in a system of levers acts as effort for the next, and thus the applied force is transferred from one lever to the next. Examples of compound levers include scales, nail clippers and piano keys.

Law of the lever

The lever is a movable bar that pivots on a fulcrum attached to a fixed point. The lever operates by applying forces at different distances from the fulcrum, or a pivot.

Assuming the lever does not dissipate or store energy, the power into the lever must equal the power out of the lever. As the lever rotates around the fulcrum, points farther from this pivot move faster than points closer to the pivot. Therefore, a force applied to a point farther from the pivot must be less than the force located at a point closer in, because power is the product of force and velocity.

If a and b are distances from the fulcrum to points A and B and the force applied to A is the input and the force applied at B is the output, the ratio of the velocities of points A and B is given by a/b, so we have the ratio of the output force to the input force, or mechanical advantage, is given by

This is the law of the lever, which was proven by Archimedes using geometric reasoning. It shows that if the distance a from the fulcrum to where the input force is applied (point A) is greater than the distance b from fulcrum to where the output force is applied (point B), then the lever amplifies the input force. On the other hand, if the distance a from the fulcrum to the input force is less than the distance b from the fulcrum to the output force, then the lever reduces the input force.

The use of velocity in the static analysis of a lever is an application of the principle of virtual work.

A lever is modeled as a rigid bar connected to a ground frame by a hinged joint called a fulcrum. The lever is operated by applying an input force F A at a point A located by the coordinate vector r A on the bar. The lever then exerts an output force F B at the point B located by r B. The rotation of the lever about the fulcrum P is defined by the rotation angle θ in radians.

Let the coordinate vector of the point P that defines the fulcrum be r P, and introduce the lengths

which are the distances from the fulcrum to the input point A and to the output point B, respectively.

The velocity of the points A and B are obtained as

The angle θ is the generalized coordinate that defines the configuration of the lever, and the generalized force associated with this coordinate is given by

where F A and F B are components of the forces that are perpendicular to the radial segments PA and PB. The principle of virtual work states that at equilibrium the generalized force is zero, that is

which is the mechanical advantage of the lever.

This equation shows that if the distance a from the fulcrum to the point A where the input force is applied is greater than the distance b from fulcrum to the point B where the output force is applied, then the lever amplifies the input force. If the opposite is true that the distance from the fulcrum to the input point A is less than from the fulcrum to the output point B, then the lever reduces the magnitude of the input force.

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Lever Levers can be used to exert a large force over a small distance at one end by exerting only a small force(effort) over a greater distance at the other. Classification Simple machine Components fulcrum or pivot, load and effort Examples see-saw, bottle opener, etc.

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It uses a wheel with a rod attached in the middle as an axle to help.

In some cases this machime warks like a lever to multiply force.

In other cases it is used to move objects lasier such as with wheels on a bieycle.
Miss no se como copiar un link y tampoco una imagen por la chromebook.