Question

A pendulum clock is running slow, it can be corrected by making this pendulum:
* Longer * Shorter * Heavier * Lighter

Answer 1

Answer:

Shorter

Explanation:

The clock is running slow i.e. its time period or the period of oscillations (T) is more e.g. If it is a seconds pendulum, its period is increased from T=2s to a greater value like 2.05s, 2.10s, etc. To correct the clock, we have to decrease T.

As,  $T = 2\pi \sqrt{\frac{L}{g} }$  and T is directly proportional to $\sqrt{L}$ , so we have to decrease the length of the pendulum.

Answer 2

A pendulum clock is running slow, it can be corrected by making this pendulum shorter.

• In a pendulum clock, the length of the pendulum and the time taken by it to complete an oscillation are related directly.
• If the pendulum is longer, it will take more time to finish one oscillation.
• So, if the pendulum clock is running slow it suggests that the pendulum is taking more time for each oscillation and therefore, its length should be reduced and made shorter.