Rotational MotionMedium
Question
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
Options
A.
B.
C.
D.mvL
Solution
As clay rod together as a system angular momentum remain constant. Angular momentum about mid point of rod before collision is
= mv × L/2
= mv × L/2
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