Question

2. The bob of a simple pendulum is a hollow
sphere filled with glycerine. If a small
amount of glycerine is drained off, then the
time period of the pendulum will:
(a) increase (b) decrease
(c) become irregular
(d) remain unchanged.​

Answer 1

Answer:

The time period increases

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Answer 2

Answer:

A) increase

Because length of simple pendulum=

Distance between point of suspension and center of gravity of system on draining of a light mercury. The center of gravity gets lowered hence, the length of simple pendulum increases

The time pendulum is given by=T=2π√(l/g)=

T is directly related to √l, as length of simple pendulum increases, the time period increases too.

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