7) A system of two blocks A and B are connected by an inextensible mass less string as shown. Pulley is mass less and frictionless. A bullet of mass m0 with velocity V0 and gets embedded. Find the impulse imparted by tension force?
Solution:
Let the Impulse = 
Then for Bullet + B Þ 
8) After perfectly inelastic collision between 2 identical particles moving with same speed in different direction, the speed of particles between ¾ th of initial speed. Find the angle between the two before collision.
Momentum remains conserved so,
9) From a solid hemisphere of radius F is removed of Radius R/2. Then find COM of solid remaining?
Solution:
COM of above solid + COM of solid hemisphere of radius R/2
(=X1) (=X2)
= COM of whole solid hemisphere with radius R (X<M).
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