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27-12-2022
Physics

Answered

A block on a horizontal surface of negligible friction is placed in contact with an ideal spring, as shown above. the block is moved to the left so that the spring is compressed a distance x from equilibrium and then released from rest. the block has kinetic energy k1 when it separates from the spring. when the spring is compressed a distance 2x and the block is released from rest, the kinetic energy of the block when it separates from the spring is
a. k1/2
b. k1
c. √2k1
d. 2k1
e. 4k1

Answer :

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