Questions
A body of mass M at rest explodes into three pieces, two of which of mass M /4 each are thrown off in
perpendicular directions with velocities of 3 and 4 , respectively. The third piece will be
thrown off with a velocity of
detailed solution
Correct option is C
Momentum of one piece =M4×3Momentum of second piece =M4×4∴ Resultant momentum =9M216+M2=5M4The third piece should also have the same momentum. Let its veIocity be ν, then 5M4=M2×v⇒v=52=2.5 ms-1Talk to our academic expert!
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In the figure given the position-time graph of a particle of mass 0.1 kg is shown. The impulse at t = 2 s is :
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