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Author Question: Five objects of mass m move at velocity at a distance r from an axis of rotation perpendicular to ... (Read 183 times)

student77

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on: Jul 28, 2018
Five objects of mass m move at velocity at a distance r from an axis of rotation perpendicular to the page through point A, as shown below. The one that has zero angular momentum about that axis is
   
  a.
 
   
  b.
 
   
  c.
 
   
  d.
 
   
  e.
 

Question 2

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


huda

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

d


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