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Question: A small sphere of mass m is attached to a spring of spring factor k and normal length l. If the sphe...

A small sphere of mass m is attached to a spring of spring factor k and normal length l. If the sphere rotates with radius r at frequency v then tension in the spring is

A

k2l

B

k2(r - l)

C

mr(2πv)2

D

kl

Answer

mr(2πv)2

Explanation

Solution

Tension in the spring is actually the centripetal force given by mvω2 i.e., mr(2πv)2.