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 the 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:
A)(m + M/3)(vL/2)
B)(m + M/12)(vL/2)
C)(m + M/6)(vL/2)
D)mvL/2
E)mvL

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 the 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: 
A)(m + M/3)(vL/2) 
B)(m + M/12)(vL/2) 
C)(m + M/6)(vL/2) 
D)mvL/2 
E)mvL

Quizplus · Accepted Answer

The Answer is D

A Thin Rod of Mass M and Length L Is