Point P in the figure indicates the position of an object traveling at constant

Question

Point P in the figure indicates the position of an object traveling at constant speed clockwise around the circle. Which arrow best represents the direction the object would travel if the net external force on it were suddenly reduced to zero? A) The two objects reach the bottom of the incline at the same time. B) It takes the lighter object 5 times longer to reach the bottom of the incline than the heavier object C) It takes the lighter object 10 times longer to reach the bottom of the incline than the heavier object. D) It takes the heavier object 5 times longer to reach the bottom of the incline than the lighter object. E) It lakes the heavier object 10 times longer to reach the bottom of the incline than the lighter object. Two unequal masses M and m (M > m) are connected by a light cord passing over a pulley of negligible mass, as shown in the figure. When released, the system accelerates. Friction is negligible. Which figure below gives the correct free-body force diagrams for the two masses in the moving system?

Explanation / Answer

1) B

when net force is zero it would move in a straight line.

2) A

because acceleration of objects do not depend on time.

3) D

because, M accelerate downward and m accelerate upward.

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