A bob of mass 10 M is suspended through an inextensible string of length l . When bob is at rest at

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5.Work, Energy, Power and Collision

hard

A bob of mass $10$ $M$ is suspended through an inextensible string of length $l$. When the bob is at rest at the equilibrium position, two particles of mass $m$ each moving with velocity $u$ making an angle $60^o $ with the string strike and get simultaneously attached to the bob. What is the value of impulsive tension $(l)$ in the string during the impact ?

A

$0$

B

$2$ $ mu $

C

$mu$

D

$12$ $ mu$

Solution

$mu$ $cos$ $60$

net $I = 2mu$ $cos$ $60$

$=$ $mu$

Standard 11

Physics

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