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Q.

A stone tied on a string is whirled in a circle. As it revolves around the rope suddenly breaks, then


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a

The stone moves tangentially

b

The stone moves radially inward

c

The stone moves radially outward

d

The motion of the stone depends upon its velocity 

answer is A.

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Detailed Solution

A stone tied on a string is whirled in a circle. As it revolves around the rope suddenly breaks, and then the stone moves tangentially.
A stone's instantaneous velocity acts as a tangent to the circle when it is traveling around a circle. The centripetal force ceases to operate when the string snaps. The stone keeps rolling along the tangent to a circular path because of inertia. The stone thus veers off to the side and follows the circular path.
 
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