Question

Apendulum bob of mass m is suspended by a massless string and at rest when string is vertical.Aconstant horizontal force F = mg starts acting on it. The value of maximum tension in string is T = mg [x√2 - 2] , then the value of x is :

(A) 1

(B) 2

(C) 3

(D) 0

Answer 1

Correct option  (C) 3

Explanation:

Tension in string is maximum when Torque on bob about 'O' is zero. When bob is at A tension is maximum