Question
A sphere of mass 0.1 kg is attached to a cord of 1m length. Starting from the height of its point of suspension this sphere hits a block of same mass at rest on a frictionless table, If the impact is elastic, then the kinetic energy of the block after the collision is
Options :
1 J
10 J
0.1 J
0.5 J
Answer :
0.5 J
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