give an example of situation when kinetic energy does not change on imposing force of body
Answers
Any object moving in circular motion because of Force applied at constant velocity does not change Kinetic Energy
Explanation:
KE = (1/2)mv² if v is constant KE does not change
Any object moving in circular motion because of Force applied at constant velocity does not change Kinetic Energy
A Car running at constant speed Kinetic energy does not change while Force is being applied
Other Example :
Any electron revolving around the nucleus with a constant speed in a orbit. The force applied here is electrostatic force of attraction between the nucleus and electron.
As speed is constant hence kinetic energy does not change
A body being dragged on a rough horizontal surface with constant velocity.
A body being pulled over a rough horizontal surface with a uniform velocity. Work done on the body by the applied force but its KE remains unchanged
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