The figure shows a top view of a ball on the end of a string traveling counterclockwise in a circular path.Assume that air resistance is negligible.The free-body diagram that best represents the net force acting on the ball is
A)1
B)2
C)3
D)4

Question

The figure shows a top view of a ball on the end of a string traveling counterclockwise in a circular path.Assume that air resistance is negligible.The free-body diagram that best represents the net force acting on the ball is 
A)1 
B)2 
C)3 
D)4

Quizplus · Accepted Answer

The net force acting on the ball is the centripetal force directed towards the center of the circular path. From the free-body diagram in Choice D, we can see that the tension in the string provides this centripetal force, while the gravitational force and the normal force cancel each other out. Therefore, Choice D best represents the net force acting on the ball.

The Figure Shows a Top View of a Ball on the End