Center of MassHard
Question
A ball of mass m strikes the fixed inclined plane after falling through a height h. If it rebounds elastically, the impulse on the ball is :
Options
A.2 m cos θ
B.2 m cos θ
C.
D.2 m
Solution
Here e = 1
if ball rebound elastically
vLOI = uLOI
∴ Along line of impact momentum conservation
= mv − (−mu) = mv + mu = 2muAlog LO I uLOL = u cosθ =
J = 2m cosθ.
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