# A based on your

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a = Based on your answers to the previous parts, what conclusion can you draw about the acceleration of the cart?
(b) Consider the situation when friction force is non-zero. What is the expression for the acceleration of the cart now? (Use the following as necessary: m 1 , m 2 , f , and g .)
If you now triple the hanging mass m 1 , (so m = 3 m 1 ) how will the value of the denominator for the expression for the acceleration change? .
What is the expression for the acceleration now? (Use the following as necessary: m 1 , m 2 , f , and g .)
Based on your answers to the previous parts, what conclusion can you draw about the acceleration of the cart?
11/25/11 8:54 PM Lab 3 - Newton's Second Law: PostLab Page 5 of 9 4. 10/10 points | Previous Answers In the diagram below, indicates the pulling force and the friction force acting on the object. The direction of motion of the object is indicated by the velocity vector Figure A Figure B Figure C For each case, indicate the direction of the net force, the direction of the acceleration of the object and state whether the object is speeding up, slowing down, or moving with constant velocity. The force vectors are drawn to scale. Direction of net force Direction of acceleration The object is A to the left to the left slowing down B to the right to the right speeding up C The net force is zero. The acceleration is zero. moving with constant velocity A simple Atwood machine consists of two masses m 1 and m 2 that are connected by a string wound over a pulley, as seen in the figure below. Assume m 2 is larger than m 1 . Motion in the upward direction is positive. On a piece of paper, draw two free body diagrams; one for each of the masses, showing all forces acting on each mass. Then answer the following questions. . 5. 10/10 points | Previous Answers
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