friction+lab+repport


 * Title:** Testing force and friction


 * Research Question:** which surface will take the most of the force to travel?
 * How does surface and weight effect the size of the fiction force?**


 * Hypothesis**: if carpet has the most friction, then it will take to most force to pull, because carpet is a rough surface.


 * If the surface causes more friction, then the rough surface will take most of the force because rough surface take more friction to pull.**


 * Material:** You will be given three different surfaces, mass and a Newton meter.

1. Draw a Data Table to record the different types of surfaces to be tested and the force needed to pull the block at a constant speed. Note that this data table should be included under the //__Data and Calculation section__//.
 * Procedure:**
 * Part I**

2. Place 500 grams in the box with the surface to be tested.

3. Attach your newtonmeter to the block.

4. Using the newtonmeter, try and pull the block along the surface. __Note the force needed to pull the block at a constant speed and record in your Data Table.__

5. Repeat steps 2-4 for the other different surfaces.

1. Draw a second Data Table to record the different weights to be tested and the force needed to pull the block at a constant speed. Note that this data table should be included under the //__Data and Calculation section__//.
 * Part II**

2. Place 200 grams on the block with the surface to be tested.

3. Attach your newtonmeter to the block.

4. Using the newtonmeter, try and pull the block along the surface. __Note the force needed to pull the block at a constant speed and record in your second Data Table.__

5. Repeat steps 2-4, placing different weights on the block.

6. Draw an x-y graph showing how the weight placed on the block affects the pulling force in newtons. Note that this graph should be included in the //__Results and Analysis section__//.


 * Surfaces || Trial 1 || Trial 2 || Trial 3 || Average ||
 * Carpet || 3.5 || 3.0 || 2.5 || 3 ||
 * Cork || 4.0 || 5.0 || 4.0 || 4.4 ||
 * Plastic || 1.5 || 1.0 || .5 || 1 ||


 * Research Question:** which mass will require the most force to pull?


 * Hypothesis**: if the mass increases then the force is also going to be increase because the more mass use the more gravity it will affect.


 * Material:** You will be given three different surfaces, mass and a Newton meter.


 * Mass || Trail 1 || Trial 2 || Trial 3 || Average ||
 * 200 m || 2.0 m || 2.0 m || 1.6 m || 1.87 ||
 * 1000 m || 7.0 m || 7.5 m || 8.0 m || 7.5 ||
 * 100 m || 1.0 m || 1.5 m || 1.5 m || 1.34 ||

The different types of surface affect the frictional forces by being rough or smooth. The best braking conditions for a car will be rough, so the frictional force will be more. The changing of the weight affect the frictional force because if the weight is less so the gravity force will be less and if the weight more so the gravity pull is more The variable did you need to control in this experiment is Newton.
 * 1. Explain what you have discovered about how different surface types affect the size of frictional forces.**
 * 2. Use your results to explain, as an example, the best braking conditions for a car.**
 * 3. Explain how changing the weight on the block affected the size of the frictional forces.**
 * 4. What variable did you need to control in this experiment so that it was a fair test?**

Dependant variable: amount of friction. Independent variable: force. Controlled variable: weight, speed, shape, scale.

Part I


 * Surfaces || Trial 1 || Trial 2 || Trial 3 || Average ||
 * Carpet || 4 || 4 || 4 || 4 ||
 * Cork || 6 || 5 || 5 || 5.34 ||
 * Plastic || 2 || 2 || 2 || 2 ||

part II


 * Mass || Trail 1 || Trial 2 || Trial 3 || Average ||
 * 200 m || 1.2 || 1.2 || 1.2 || 1.2 ||
 * 1000 m || 3.8 || 3.0 || 3.0 || 3.27 ||
 * 50 m || .3 || .5 || .4 || .4 ||


 * 5. What conclusion can you form from this? Was your hypothesis correct?**

For part I our hypothesis was wrong because cork take most of the friction to pull and we predicted that carpet take the most of the force to pull.. For part II our hypothesis was right.

Part I
 * Question**: which surface will take the most of the force to travel?
 * Hypothesis**: if carpet has the most friction, then it will take to most force to pull, because carpet is a rough surface.
 * Results**: in our experiment we were changing the surface. So, we got 4 for carpet, 4.4 for cork and 1 for plastic. So, we predicted that carpet will take most of te force, but cork took the most of the foce.

Part II Question: which mass will require the most force to pull? Hypothesis: if the mass increases then the force is also going to be increase because the more mass use the more gravity it will affect. Evaluation: