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The instantaneous speed of the point of contact during rolling is zero.

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in Engineering Physics I by (558k points)
The instantaneous speed of the point of contact during rolling is zero.

(a) True

(b) False

I had been asked this question by my school principal while I was bunking the class.

My question is based upon Moment of Inertia and its Significance in portion System of Particles and Rotational Motion of Engineering Physics I

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The correct option is (a) True

To explain I would say: A rolling body can be imagined to be rolling about an axis passing through the point of contact of the body and the ground. Hence the instantaneous speed of the point of contact is zero.

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