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# IBPhysicsHL-Inclined Plane Lab

Extracts from this document...

Introduction

 Dhruv Medepalli

Inclined Plane Lab

Design

Aspect 1

Research:

If an object is placed upon a surface that is inclined at a certain angle then that will decide the acceleration in which the object is going down the inclined plane. When looking at an inclined plane it is important to see what forces are acting upon it to see what the object is doing. In our case of there was Fn, Gravitational Force and, Fd.These forces act upon the object to see where it is going. In an inclined plane there will always be at least two forces acting upon the object which would be weight (pointing downwards) and force normal (pointing forwards). Force normal as always been the opposite of the gravitational force, but that is not true because we now of horizontal planes, but this is a inclined plane and the truth is that Force Normal is always perpendicular to the surface the object is on.

Works Cited:

http://www.glenbrook.k12.il.us/gbssci/Phys/Class/vectors/u3l3e.html

Defining the Problem:  How does an angle constantly being inclined affect the acceleration for a car on a frictionless plane?

Variables:

Dependent:  Acceleration of the car

Independent: Angle of inclination

Controlled: Length of Ramp

Controlled:  Distance of Motion Detector from Ramp

Controlled: coefficient of Friction (negligible)

Aspect 2:

Length of Ramp:

Middle

4.70

.62

.59

.61

5.00

.60

.60

.60

5.28

.64

.63

.64

5.57

.69

.69

.69

Aspect 2:

After recording the two trials and getting two accelerations for one angle, we average the two acceleration and we get the average acceleration through this table and below is the graph of the average acceleration:

 Degrees Average Acceleration (m/s) 2.87 .22 2.98 .27 3.27 .33 3.55 .35 3.84 .40 4.42 .53 4.70 .61 5.00 .60 5.28 .64 5.57 .69

Considering in mind that this

Conclusion

Aspect 3

For the few weaknesses I had I can say there are simple solutions for them to be avoided next time.  With the motion detector I think we could first find a proper height for both the ramp and the car to be placed at and whenever we raised the ramp we would raise the motion detector by the same amount. Next was the time management where as always we could have stopped rushing and taken our time even though it was scarce, this was because we had to do this lab during a time with constraints. The last weakness was with the acceleration and my solution is to increase the length of the ramp and let the car run for more time and thus we will get a more detailed acceleration. To remove systemic/ random error next time we would have to make sure we have more time for the experiment and set up properly.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

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