(1): A ball connected to a string, tied to a fixed point, in a circular motion on a frictionless horizontal table is in equilibrium. (2): Magnitude of the centripetal force is equal to the magnitude of the tension in the string.
A
Both (1) and (2) are true and (2) is the correct explanation of (1)
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B
Both (1) and (2) are true but (2) is not the correct explanation of (1)
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C
(1) is true but (2) is not true
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D
(1) is not true but (2) is true
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Solution
The correct option is C (1) is true but (2) is not true T=mω2r The magnitude of the tension in the string is equal to the magnitude of the centripetal force. The ball is not in the equilibrium because centripetal force is always acted on the ball. This is provided by the tension force.