Question
Question: A simple pendulum is made of a body which is a hollow sphere containing mercury suspended by means o...
A simple pendulum is made of a body which is a hollow sphere containing mercury suspended by means of a wire. If a little mercury is drained off, the period of pendulum will
A
Remains unchanged
B
Increase
C
Decrease
D
Become erratic
Answer
Increase
Explanation
Solution
When a little mercury is drained off, the position of c.g. of ball falls (w.r.t. fixed and) so that effective length of pendulum increases hence T increase.