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Grade: 12th pass

                        

A bullet of mass m moving vertically upwards with a velocity u hits the hanging block of mass m and gets embedded in it.The height through which the block rises after the collision, assume sufficient space above the block

4 years ago

Answers : (1)

Vikas TU
12285 Points
							
conserve the energy,
0.5mu^2 + 0 = 0.5(m + m)v^2 + 2mgh
u^2/2  =  v^2 + 2gh.........(1)
momentum conservation,
mu = 2mv
or
u = 2v.........(2)
solve both eqns. and get h value.
4 years ago
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