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IDENTIFY THE LINK BETWEEN THE GIFS BELOW AND ENERGY CONVERSION

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IDENTIFY THE LINK BETWEEN THE GIFS BELOW AND ENERGY CONVERSION

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Acceleration due to gravity = g = 9,8 m/s2

F g = m x g
F g = Weight

Example:
Calculate the gravitational force on an object with mass 55 kg on the surface of earth.

F g = m x g
= 55 (9,8)
= 539 N down

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Gravitational Potential Energy - GCSE Physics

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Gravitational Potential Energy | GCSE Physics Online

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If you move an object higher you increase the amount of gravitational potential energy it has. This is equal to its mass times gravitational field strength times the change in height.

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Kinetic Energy of a Tennis Ball - WORKED EXAMPLE - GCSE Physics

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Question 2 - SKETCH

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EXERCISE 1

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Conservation of Energy (Transferred from Potential Energy to Kinetic Energy) - A Level Physics

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MECHANICAL ENERGY IS THE SUM OF POTENTIAL AND KINETIC (E mech = Ek + Ep)

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MECHANICAL ENERGY IS THE SUM OF POTENTIAL AND KINETIC (E mech = Ek + Ep)

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Watch this video on conservation of mechanical energy 

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Watch this video on conservation of mechanical energy 

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Principle of conservation of mechanical energy: Design your own skate park

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Principle of conservation of mechanical energy: Design your own skate park

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DEFINITION:

Energy is the ability to do work.

Work is Energy transferred.

Also:

Work = ​The product of force and distance moved by an object.
(NOTE: The force is the component of the force in the direction of motion)

Equation for WORK:     W = F x d

Therefor energy and work are interchangeable physical quantities.

E = W  (Both have the unit of Joules)

When a system does work, its energy content will decrease.

Conversely, a system on which work is being done will have an increase in its energy content.

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Types of Energy & the Law of Conservation of Energy

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Bill Nye shows us how energy works and how it effects us! He also explains the different kinds of energy and what they do.

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Definition:
Work = The product of force acting on an object and the distance moved.
Formula:
W = F.d

Motion of the object must be in the direction of the component of the applied force acting on the object.

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The Power of a Waterfall | Wonders of Life w/ Prof Brian Cox | BBC Earth

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Potential Energy and Kinetic Energy in a Pendulum

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Teaching with style; Mechanical Energy Conservation

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Principle of Conservation of mechanical energy in action

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Principle of Conservation of mechanical energy in action

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The law states:
The total mechanical energy of a closed system remains constant.

For a pendulum swing:
Tot E mech top = Tot E mech bottom
mgh + 0 = 1/2mv 2 + 0

Check out the Prof Walter Lewin video above.

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Teaching with style; Mechanical Energy Conservation

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Do the following problem:
A metal ball of mass 0,2 kg is tied to a light string to make a pendulum. The ball is pulled to the side to a height (A), 0,1 m above the lowest point of the swing (B). Air friction and the mass of the string can be ignored. The ball is let go to swing freely.

1. Calculate the potential energy of the ball at point A.

2. Calculate the kinetic energy of the ball at point B.

3. What is the maximum velocity that the ball will reach during its motion?

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HeartDance🙃’s short video with ♬ original sound

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1817 - First roller coaster features cars that locked onto the track (Paris)

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1885 - “CYCLONE”: 1st Powered Chainlift Roller Coaster; Coney Island, Brooklyn, New York 

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1885 - “CYCLONE”: 1st Powered Chainlift Roller Coaster; Coney Island, Brooklyn, New York 

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Mall of America "Spongebob Squarepants Plunge"

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Energy transformations in a coaster ride:

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Potential And Kinetic Energy V2: Physics Concept Trailer™

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Wooden roller coasters: Shiver me timbers 

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Wooden roller coasters: Shiver me timbers 

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4K AWESOME Twister Roller Coaster Front Seat POV Knoebels Amusement Park

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Purpose:

Your goal is to design and build the wildest roller coaster ride that will deliver a marble safely to the end. You must at least demonstrate three successful consecutive runs.

Criteria:  Your roller coaster should have at least:

·         2 hills,  2 turns and 1 vertical loop (extra credit for extra loops, hills or turns)

Materials:

·         2 lengths of insulation tubing & marble

·         Scissors & toothpicks

·         Support material like wooden sticks or paper cups

·         Stop watch (phone timer) & meter rule

Procedure:

1. Design a roller coaster and submit your design for approval before construction.

2. You need to do Potential energy and Kinetic energy calculations.

3. For this you need to measure the height of the roller coaster from where the marble starts to the base where the marble ends its trip.

4. You need to calculate the velocity of the marble as it finally rolls off into a cup.

5. The entire group must make the demonstration in front of the class and speak on their project for 3 minutes (about the history and physics of roller coasters, and a video your team’s experience in building it.)

6. Class will vote for best themed & decorated roller coaster (2-point bonus).

Calculations:

Mass of marble (kg) = m =

Track Height (m) = h =

Distance traveled horizontal (m) = d x =

Time t (s) =

Actual final velocity  (m.s⁻¹) of marble  v = d x / t =

Ep  (J) = mgh =

Ek  (J)  = ½mv ² =

E Lost (E p – E k) =

Theoretical final velocity of marble   v = √(2gh)  =

Conclusion:

1. When was the first roller coaster made?

2. Which is the world’s highest coaster?

3. What do you think happened to the energy lost during the marble ride?

4. What laws are being demonstrated during the marble ride?

Roller Coaster Project Rubric:
| Looking For… |

Way

Part Way

No Way

Scoring

| Presentation |

Well presented, covers the history, physics and team experience.

Reading from paper, some parts missing, lacking seriousness.

Missing major parts of presentation or making a joke of presentation.

Physics,History                                                                                                                   /2
Formal presentation                                                                                                          /3

| Roller Coaster |

Has all the appropriate number of hills, loops and/or turns.

3 successful trials in a row | Missing some of the requisite features.

2 successful trials in a row | Missing loop. Trials mostly unsuccessful.

Features                                                                                                                               /3

| Workmanship & Theme |

Neat finish and well decorated. Has a well defined theme.

Wobbly. Theme is not apparent/ is silly/ is unappealing

No theme, Structure completely unstable

Workmanship                                                                                                                     /1 Theme                                                                                                                                  /1

| Calculations |

All calculations done correctly.

Some calculations done wrong.

Large errors in calculations.

Calculations                                                                                                                       /5

| Conclusions |

All questions answered fully and correctly.

Some questions answered correctly or partial answers.

Answers wrong or show lack of understanding.

Conclusions                                                                                                                        /2

| Teamwork |

Team has worked well together to produce an effective and strong product, with equal distribution of tasks.

Some team members worked harder than others in completing the project.

Most of the work has been done by one or two people.

Effective Teamwork                                                                                                           /3

TOTAL 20

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Mechanical Energy = Ep  +  Ek   (in a closed system)

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Mr Lambson is travelling down a hill in his Lamborghini when he suddenly runs out of fuel at point A. In the distance, over the next hill at B, Mr Lambson spots a fuel station at D. Use the ground as a reference point. Mr Lambson’s Lamborghini has a mass of 1600 kg, this includes the mass of Mr Lambson. Use the information and diagram above to answer the following questions. Ignore all friction.

1    State the Law of Conservation of Energy.                      (2)

2    State the Principle of Conservation of Mechanical
Energy.                                                                                (2)

3    Calculate the total mechanical energy which Mr Lambson’s Lamborghini possesses at A, assuming he was rolling down the hill at 4 m.s⁻¹ when he ran out of fuel.          (3)

4    Calculate the potential energy of Mr Lambson’s
Lamborghini at B.                                                                (2)

5    Calculate the speed with which he will arrive at the fuel
station at D.                                                                             (4)