Assertion : Force is required to move a body uniformly along a ci… - Vidyadip

Question

Assertion : Force is required to move a body uniformly along a circle.
Reason : When the motion is uniform, acceleration is zero.

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Answer

(b) When a body is moving in a circle, its speed remains same but velocity changesduetochange in the direction of motion of body. According to first lawofmotion,forceisrequiredtochangethe state of a body. As in circular motionthedirectionofvelocityofbodyischangingsotheacceleration cannot be zero. But for a uniform motion acceleration is zero (for rectilinear motion).

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