Question
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.