A simple pendulum of length 
carries a bob of mass 
. When the bob is at its lowest position, it is given that the minimum horizontal speed necessary for it to move in a vertical circle about the point of suspension. When the string is horizontal, the net force on the bob is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
When the bob is moving in a vertical circle, the velocity at lowest point is given by
Now, using conservation of energy of pendulum when it reaches horizontal position.
Now, horizontal force on the bob,
Vertical force on the bob, 
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