A body is hanging from a rigid support by an inextensible string of length l.It is struck inelastically by an identical body of mass m moving with horizontal velocity v=root under 2gl,tge tension in the string increases just after striking by-a)mg. b)3mg c)2mg or d)none of these.
Abhishek Mishra , 8 Years ago
Grade 12
1 Answers
Vikas TU
Last Activity: 8 Years ago
I think tension will remain same here. d) none of these As Tension is acting in -y direction and the velocity initiates a force in x- direction to the body. Therefore, Momentum cannot be conserved as tension force .i.e an external force is acting on the body.
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