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Solution


Q.

A bullet of mass m hits a block of mass M elastically. The transfer of energy is the maximum, when:            [2023]
1 M=m  
2 M=2m  
3 M≪m  
4 M≫m  

Ans.

(1)

In an elastic collision kinetic energy is conserved, therefore maximum energy is transferred when M = m because when M = m, velocities will get exchanged. The bullet will come to rest and block will start moving with the speed of bullet.