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(a) A ball, suspended by a thread, swing...

(a) A ball, suspended by a thread, swings in a vertical plane so that its acceleration in the extreme and the lowest positions are equal. The angle `θ` of thread deflection in the extreme position will be
( b) The kinetic energy of a particle moving in a circle of radius R depens on the distance covered as `T = as^(2)` , where 'a' is a constant. Find the force acting on the particle as a function of s.

A

`tan^(-1)(2)`

B

`tan^(-1) (sqrt(2))`

C

`tan^(-1)((1)/(2))`

D

`2 tan^(-1)((1)/(2))`

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The correct Answer is:
D
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