A ball of mass is attached to a string of negligible mass that has a length . the ball moves clockwise in a vertical circle, as shown above. which of the following is true about the ball-string-earth system as the ball moves from point to point?


Question: A ball of mass is attached to a string of negligible mass that has a length . the ball moves clockwise in a vertical circle, as shown above. which of the following is true about the ball-string-earth system as the ball moves from point to point?

In this blog post, I will discuss a common physics problem involving a ball of mass m attached to a string of negligible mass that has a length L. The ball moves clockwise in a vertical circle, as shown in the figure below. I will explain which of the following statements is true about the ball-string-earth system as the ball moves from point A to point B.

Figure: A ball of mass m attached to a string of length L moving in a vertical circle.


The statements are:

- The tension in the string is constant.

- The angular momentum of the system is conserved.

- The mechanical energy of the system is conserved.

- The net force on the ball is zero.


To answer this question, we need to apply some concepts of circular motion, conservation laws, and forces. Let's analyze each statement one by one and see if it is true or false.

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