Which of the following statements is not corr | vedclass

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(B) rolling body can be imagined to be rotating about an axis passing through the point of contact of the body with the ground.Hence,the instantaneous

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During pure rolling on ground,the instantaneous acceleration of the point of contact is zero.

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(B) rolling body can be imagined to be rotating about an axis passing through the point of contact of the body with the ground.Hence,the instantaneous speed of the point of contact is zero.Thus,statement $A$ is correct.As the body is rotating,the point of contact has a centripetal acceleration directed towards the center of the body,so its instantaneous acceleration is not zero.Hence,statement $B$ is incorrect.In perfect rolling on ground,the velocity of the point of contact is zero.Since the point of contact does not move relative to the ground,the work done against friction is zero.Thus,statement $C$ is correct.Rolling cannot take place in the absence of friction on an inclined plane because it is the frictional force that provides the necessary torque which makes the body roll.When the inclined plane is perfectly smooth,the wheel will simply slip under the effect of its weight.Hence,statement $D$ is correct.

Which of the following statements is not correct?

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