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# Lab # 2 - Tim Matthews March 9 2008 Physics 133 Lab#2...

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Tim Matthews March 9, 2008 Physics 133 Lab #2 Yipeng Yang Abstract In part one of Lab 2 we tried to prove Newton’s first law, which says that an object at rest will remain at rest until an exterior force acts upon it. By finding that all forces in the system add up to a net force of zero, or close to that, we can determine that Newton’s first law is viable. In a perfect Lab the net forces in the X and Y direction should have been zero, but what we obtained is a net force of 10.1 in the X direction and a net force of 42.9 in the Y direction. In part two of Lab 2 we tried to prove Newton’s second law, which says that a bodies net force is equal to its mass times its acceleration. By already knowing a cart’s mass we can then measure the velocity, which then gives us the acceleration and then the cart’s force. With the 10 gram mass we obtained a value 7.9% higher than the actual acceleration value. With the 20 gram mass we obtained a value 7.2% higher than the actual value.

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