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0 votes
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in Physics by (70.7k points)

One end of mass less inextensible string of length l is fixed and other end is tied to a small ball of mass m. The ball is performing a circular motion in vertical plane. At the lowest position, speed of ball is √(20gl) Neglect any other forces on the ball except tension and gravitational force. Acceleration due to gravity is g.

At the highest position of ball, tangential acceleration of ball is -

(A) 0 

(B) g 

(C) 5 g 

(D) 16 g

1 Answer

+1 vote
by (71.5k points)
selected by
 
Best answer

Correct option (A)

Explanation:

At the highest position of ball, tangential acceleration of ball is zero,

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