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It is of chapter centre of mass. This question belongs to Conservation of linear momentum.

 It is of chapter centre of mass.
This question belongs to Conservation of linear momentum.
 

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Assume that v1 and v2 be the velocity of bullet after collision.As the block raise to vertical distance of 0.1 m then kinetic energy converted into potential energy.From the law of conservation of energygh2^2 = m2v2½ m =√2gh2ð v = √2*9.8*0.12ð v= 1.4 m/sec2ð vu1 = initial velocity of bulletBy the law of conservation of momentum2v2+ m1v1 = m1u1ð m2v2 - m1u1= m1 v1ð m1)/ m2v2 - m1u1 = ( m1ð v    =(0.01*500 – 2x1.4)/0.01 = (5-2.8)/0.01= 2.2/0.01= 220 m/sec

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