A simple pendulum is made of bob which is a hollow sphere full of sand suspended by means of a wire. If all the sand is drained out, the period of the pendulum will

increase

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decrease

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remain same

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become erratic

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Solution

The correct option is C remain same
l in the equation $T = 2 π \sqrt{\frac{l}{g}}$ is measured from centre of mass and centre of mass in both cases remains at same location.

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Similar questions

A simple pendulum is made of a bob which is a hollow sphere containing mercury, suspended by a means of a wire. If mercury is drained off continuously the period of the pendulum will

A) remain unchanged.

B) first increase, then decrease

C) decreases.

D) become erratic

and Why?

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A simple pendulum is made of bob which is a hollow sphere full of sand suspended by means of a wire. If all the sand is drained out, the period of the pendulum will

The correct option is C remain samel in the equation T=2π√lg is measured from centre of mass and centre of mass in both cases remains at same location.

The correct option is C remain same
l in the equation $T = 2 π \sqrt{\frac{l}{g}}$ is measured from centre of mass and centre of mass in both cases remains at same location.