The time period of a simple pendulum in a lift descending with constant acceleration $g$ is

$A$ simple pendulum of length $L$ and mass (bob) $M$ is oscillating in a plane about a vertical line between angular limits $-\varphi$ and $+\varphi$. For an angular displacement $\theta$ $(|\theta| < \varphi)$,the tension in the string and the velocity of the bob are $T$ and $v$ respectively. Which of the following relations hold good under the above conditions?

$A$ lift is descending with an acceleration of $g/3$. What will be the time period of a simple pendulum suspended from its ceiling if its time period in a stationary lift is $T$?

The time period of a simple pendulum will be doubled if we

$A$ pendulum clock is running fast. To correct its time,we should

The period of a simple pendulum is doubled,when