I don't get why D is right , I throught the speed of a circular motions remains constant 12A ball of mass M is attached to a string of negligible mass that has a length R. The ball moves clockwise in a vertical circle, asshown above. Which of the following is true about the ball-string-Earth system as the ball moves from point 1 to point 2? AThe potential energy decreases by MgR and the tension in the string increases by 2Mg.ВThe potential energy decreases by MgR and the tension in the string increases by more than 2Mg.The potential energy decreases by 2M9R and the tension in the string increases by 2Mg.DThe potential energy decreases by 2M9R and the tension in the string increases by more than 2Mg.

Solution: As per the given data,

Answered: A ball of mass M is attached to a…

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A ball of mass M is attached to a string of negligible mass that has a length R. 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 1 to point 2?