If the string of a pendulum were cut when the bob is at its central position, the bob would fall to the earth due to the absence of the

force of buoyancy

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force of deformation

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force exerted by the string in the downward direction

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force exerted by the string in the upward direction

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Solution

The correct option is D force exerted by the string in the upward direction
If the string of a pendulum were cut when the bob is at its central position, the bob would fall to the earth due to the absence of the force exerted by the string in the upward direction. At that time, only weight of the bob is acting in downward direction so pendulum falls down.

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