4.
When a body is travelling in a circular path
withuniform speed then kinetic energy the
body will be
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When a body is moving in a circular motion with constant speed, the direction of it continuously changes and hence velocity(v), momentum(p), and acceleration change because they are vectors and their direction changes, only as kinetic energy is a scalar, it remains constant.
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When a body moves with constant speed in a circular path, the motion of body is said to be uniform circular motion. Force acting on the body in circular motion is centripetal force which results in centripetal acceleration.
Explanation:
if the speed is constant then change is kinetic energy is zero corresponding work done will be zero. the forces applying on the body are in radial direction and movement of body is tangential (angle between force and displacement is 90∘) sot the total work done by forces will be zero.
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