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

(a) increase 

(b) decrease 

(c) remain same

(d) become erratic

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1 Answers

Correct option (c) remain same

Explanation :

As initial and final distance of centre of mass from the point of suspension is same that is why the time period remains same.

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