Question

The period of oscillation of a simple pendulum of constant length at the surface of the earth is T. Its time period inside mine will be ______.

Options

• increases

• decreases

• no change

• None

Answer 1

The period of oscillation of a simple pendulum of constant length at the surface of the earth is T. Its time period inside mine will be increases.

Explanation:

Value of g decreases on going below earth's surface `"T" ∝ 1/sqrt"g"`. With depth g decreases according to the relation g' = `"g"[1 - "d"/"R"]`. If g decreases, Time period increases.