Home Physics Work, Energy, Power and Collision NTA Abhiyas Question -Work Power and Energy A bead of mass m can slide without friction …
Physics Work, Energy, Power and Collision NTA Abhiyas Question -Work Power and Energy MCQ (Single Correct)

A bead of mass m can slide without friction on a fixed circular horizontal ring of radius 3R having a center at the point C. The bead is attached to one of the ends of spring of spring constant k. Natural length of spring is R and the other end of the spring is fixed at point O as shown in the figure. If the bead is released from position A, then the kinetic energy of the bead when it reaches point B is

A
B
C
8kR 2
D
12kR 2

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Text Solution

Verified by Experts
The correct answer is:
C

Given,

Mass of bead = m

Radius of circular horizontal ring = 3R

Natural length of spring = R

According to conservation of energy,

KE i + PE i = KE f + PE f

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