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1) Write your name and your partner’s name.

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Once you are done, spend time reading the rest of the your classmates’ experiment and comment on them. 

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Once you are done, spend time reading the rest of the your classmates’ experiment and comment on them. 

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When conducting the experiment,use blocks of the different amount of masses.
Pull the blocks with the same amount of forces and on the same surface.
The longer it takes for the block to be pulled to the end,the more the frictional force of the block.

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1.Take 3 different blocks with different masses. One with 1kg, and another with 2kg.
2. Hook the 1kg block to the spring balance and drag it on the surface.
3. Measure the amount of force taken to drag the 1kg block on the surface.
4. Repeat with the 2kg block.
5. Then compare the amount of force taken to pull each of the different blocks.(The 2kg block should take the largest amount of force to move)

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Aim of this experiment is to find out if we need to exert a  larger  force to move an object of a larger mass across 4 similar surfaces(smooth metal)
There are 4 blocks of different masses of 50grams 100 grams 150 grams and 200  grams respectively
They are all pulled at the same speed ata steady pace with-a spring balance the measurements are taken and recorded...........
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✅ DONE ✅

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To conduct a fair experiment, we must only have one changed variable and only only one measured variable so the Results at the end of the experiment will be accurate.

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Aim: find out if mass affect the amount of frictional force.
Variable changed: the mass of the object
Materials:  3 object (same type)with different mass (80g,100g,120g),friction board (the same type of surface),spring balance.

Step 1: Weigh and record the different mass of the objects.
Step 2: Pull the object that is 80g along the friction board using a spring balance which is hooked to the object.
Step 3: Record the reading (reading 1)on the spring balance of the force needed (g).
Step 4 : Repeat step 3 and record reading 2
Step 5: Calculate the average force is needed to move the object.
Step 6: Repeat step 3-5 for the objects with a mass of 100g and 120g.

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Aim: to find out if the heavier or lighter the mass will affect the amount of force needed pull the object against a surface
Hypothesis: the heavier the object the more the amount of force needed to pull the object
-Before the start of the experiment, check that all variables are kept the same except the mass of the object
-Take two balls similar in shape and size,but different in mass, and put them on two similar ramps with the same height and release them at the same time

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1) get a heavy object and put it on a table
2)put a heavier object on a similar table
3) move the table by pushing
[conclusion]:
(The harder it is to push the table ,more push force of the heavier object pushing down on the table .)~claim/evidence (more motion  force needed to overcome amount of frictional  force between the legs of the table and floor )~result ,thus mass of object affects the amount of frictional force needed to move the object

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Aim:To find out is the mass of an object affects the amount of frictional force
MV-amount of force used to pull the wooden blocks
VC-the mass of the object pulled across the surface
ConV- the surface the object was being pulled across on
-the type of spring balance used
-the size of the object
Step 1-Weigh and record the mass of the different wooden blocks
Step 2-Hook one of the wooden blocks to the spring balance
Step 3-Pull the wooden block along the surface and record the reading on the spring balance
Step 4-Repeat steps 1-3 using the same wooden block to ensure that the results are reliable.
Step 5-Repeat steps1-4 using the other wooden blocks of different mass.
Step 6-Calculate the average force needed to pull each wooden block to find out if mass affects the amount of frictional force.

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The aim of the experiment is to see if the mass of an object affects the amount of frictional force.The variable change is the mass of an object.The constant variable is the type of surface and many more(almost the rest).Try at least 3 times to have an accurate and reliable experiment.There is one set(maybe more)of measured variable which is the amount of frictional force that opposes the motion of the block. I am hungry😜.The conclusion is that the mass of an object affects the amount of frictional force.DONE,time to eat.🍔

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The variable changed will be the weight of the objects
The constant variables are...
-the type of surface the block will be moving on
- the amount of force needed to pull the block
- the type of spring balance used
-the type of material of the block
Conclusion:
The heavier the object, the more the amount of frictional force between the object and the surface

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Aim:to find out if the mass of the block affects the amount of frictional force
1:weigh and record the mass of the different blocks
2:pull the block along the metal surface with a spring balance
3:record the reading on the spring balance in reading 1
4:repeat step 3 with the other blocks of different mass

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Aim: to find out if more frictional force is created when there is more motion.
Changed variable/measured variable:amount of motion.
Constant variable: type of surface
When there is more motion, there is more frictional force.

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The same cart is being used for the experiment, the type of surface and amount of force applied on the cart is the same throughout the experiment. The mass of each block is also the same. The only variable changed is the amount of blocks that is in the cart. As you increase the amount of blocks in the cart, the more the amount of force is needed to push the car. In conclusion, the amount of friction is affected by the mass of the object.

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Aim:to find out if the mass of the object affects the amount of frictional force between the two surfaces. (WHAT ARE THE TWO SURFACES?)
Hypothesis:the heavier the object, the more frictional force there is between two surfaces.
Variable change:the mass of the two objects must be different(eg one ball-100g, other ball 150g).
Constant variable:type of surface,amount of force applied on the two objects,location of experiment,size and shape of objects.
Measured variable:amount of frictional force between the two  surfaces.
Step 1:measure the mass of the two objects which in this case is 100g and 150g then record the two masses.
Step 2:roll the 100g ball along the surface and record where it stops at.
Step 3:Repeat Step 2 with the 150g ball.
(Conclusion)The ball that rolls the shortest distance has the most frictional force as the ball has the most mass

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Aim:To find out if mass affects the amount of frictional force.
Materials used:  —Ball Y at 10kg
—Ball X at 5kg
— Plastic ramp placed at ground level
Variable changed : The mass of each ball.
Varaibles kept the same: — Plastic ramp placed at ground level
—amount of force applied on to each time we roll the balls
—same surface is used to roll the balls.
—balls are of the same size and shape.

Step1: Measure the weight of each Ball, Ball X And Ball Y.(Ball Y is measured at 10kg and Ball X is measured at 5kg)
Step 2:  Place the plastic ramp on the floor.
Step3:Roll Ball Y on the ramp first. Ball Y is observed to be rolling down the ramp the slowest of the two balls. This shows that there is more frictional  force between the  heavier object and the surface.
Step4: Roll Ball X on the ramp.Ball X is observed to be rolling down the ramp the fastest of the two balls. This shows that there is lesser frictional force between the lighter onbject and the surface.
Step5: Repeat step 3 and step 4 at least twice.
Step6: calculate the average value for two or more readings to ensure that a more accurate value is obtained

Conclusion: The mass of the object affects the amount if frictional force between the object and the surface. Based on the experiment, the lighter the object , the lesser the frictional force between the object and the surface. And the heavier the object, the more the frictional force between the object and the surface.

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The variable changed is the mass of the object.
The constant variables are :
-the material used to make the block
-the type of surface the block to being pull along

To make the experiment more reliable, we should measure 2 sets of results and find its average amount.

Steps:
1.  Hook the 100g wooden block to the spring balance.
2.  Pull it on the wooden surface.
3.   Record down the measurements.
4. Repeat steps 1 - 3 with a 200g wooden block.
5. Compare the results.

Conclusion = The heavier the object is, the more force is needed to pull it and it will have more friction between the bottom surface of the block and the surface of the floor.

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Aim: To find out if the mass of the wooden block affects the amount of motion force needed to pull the block along a surface(10g, 100g,200g).
Changed variable: The mass of the wooden block
Measured variable: The amount of force used to pull the wooden block.
Procedures:
(1) Weigh and record the weight of the wooden block.
(2) Pull the wooden block along the surface of the table with the spring balance.
(3) Record the amount of force needed to pull the wooden block.
(4) Repeat steps 1-3 with the other two weights.
(5) Calculate the average amount of force needed to pull each wooden block on the same table surface.

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Aim: To find out if the weight of the wooden block  affects the amount of motion force to move the wooden block along a surface
The changed variable for this experiment is the weight  of the wooden block(20g , 100g 150g)The rest of the variable should be kept constant (type of surface,size of wooden block )
Measured variable : The amount of force used to move the wooden block .
Measured variable : The amount of force used to move the wooden block
To ensure the accuracy of the results , there should be two sets of measued variable
Conclusion:
The heavier the object, the more the amount of frictional force between the object and the surfac

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Aim: To find out if the mass of the cardboard box affects the amount of motion force needed to move the box.
Change variables : The mass of the box
Constant variables : -the surface that the box is on
-the same box that is used
Measured variable: The amount of force needed to push the box
Steps: 1)Record the mass of the box
2)push the box
3)record the amount of motion force needed to overcome the friction force
4) repeat step 1,2,3 but with a box with different masses

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Aim: to find out if the mass of the ball affects the amount of friction produced.
Variables needed: ruler, 10g ball, 20g ball, flat open space with nothing that can affect the experiment such that the results are unreliable and inaccurate
Steps: roll the 10g ball 3 times and measure the distance traveled by the ball, record the distances and find the average distance. Roll the 20g ball 3 times and measure the distance traveled by the ball, record the distances and find the average distance. The force applied on the balls must be the same or the experiment would not be accurate. compare the average distance between the 10g ball and 20g ball. The 20g ball should have a shorter distance as the 20g ball is heavier and thus has more friction between it and the flat open space, making the ball travel a shorter distance.

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Aim of experiment: To find out if mass affect the amount of frictional force between two surfaces.
Variable change: The weight of the wooden blocks. (There could be wooden blocks of 200g, 500g, 1kg, etc.)

Constant variables:

1. The surface on which the experimented wooden block is sliding on.

2. The type of spring balance.

3. The amount of force exerted to overcome the frictional force between the surface and the wooden block.

4. The stability while pulling the wooden block.

5. Etc.

Without all these constant variables, the experiment would not be a fair one.

The experiment:
Take the first wooden block (perhaps 200g?) and hook it onto the spring balance. Then, lay it down on the surface you are going to use. Drag the wooden block stably on the surface before recording down the reading on the spring balance on a piece of paper.

Repeat the experiment another few times for the reliability of results.

Repeat the experiment a few other times for the 500g and 1kg wooden block

Predictable results/Hypothesis:
Mass affects the amount of frictional force between two surfaces.

Observable results:
The heavier the block, the more amount of frictional force between the surface and the wooden block.

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AIM:TO FIND OUT WHETHER THE
MASS OF THE WOODEN BLOCK AFFECTS THE  AMOUNT OF FORCE NEEDED TO DRAG THE WOODEN BLOCK ACROSS A SURFACE.
Equipments
changed variable: THE mass of the three wooden block.
Measured variable:THE amount of force needed to overcome the frictional force between the surface of the block and the surface of the surface of the floor when the block is being pulled by the spring balance across the path.