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General
Easy
Question
A disc of circumference s is at rest at a point A on a horizontal surface when a constant horizontal force begins to act on its centre. Between A and B there is sufficient friction to prevent slipping, and the surface is smooth to the right of B. AB = s. The disc moves from A to B in time T. To the right of B
- the angular acceleration of the disc will disappear, linear acceleration will remain unchanged
- linear acceleration of the disc will increase
- the disc will make one rotation in time T/2
- the disc will cover a distance greater than s in further time T
The correct answer is: the disc will make one rotation in time T/2
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