Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion (A): A spring has potential energy, both when it is compressed or stretched.
Reason (R): In compressing or stretching, work is done on the spring against the restoring force. In the light of the above statements, choose the correct answer from the options given below:
Two bodies of masses m₁ and m₂ have equal kinetic energies. If p₁ and p₂ are the
NextThe relation between a conservative force F and potential energy U is given by:
A drop of liquid of diameter 2.8 mm breaks up into 126 identical drops. The increase in energy is ne
MediumAn object of mass 5 kg falls from rest through a vertical distance of 20 m and reaches a velocity of
MediumFind out potential energy of the system
EasyRead both the statements carefully and choose the correct alternative. Assertion (A): The instantane
EasyA quarter horse power motor runs at a speed of 600 r.p.m. Assuming 50% efficiency, the work done by
EasyA body is suspended from a smooth horizontal nail by a string of length 0.25 metre. What minimum hor
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