Question

A simple pendulum is taken from the equator to the pole. Its period [Kerala (PET/PMT) 2005]
A) Decreases B) Increases C) Remains the same D) Decreases and then increases

Answer 1

We have formula for period of a simple pendulum as
T = 2 π $\sqrt{ \frac{l}{g} }$

As we move from the equator to the poles, the value of acceleration due to gravity 'g' increases. From the equation, we can see that the period is inversely proportional to acceleration due to gravity. Hence, as g increases, T decreases.

Thus, period of a simple pendulum decreases when it is taken from the equator to the pole. Therefore, (A) is the correct answer.

Answer 2

Answer:

decrease

Explanation:

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