A second's pendulum is placed in a space laboratory orbiting around the earth at a height $3R$, where $R$ is the radius of the earth. The time period of the pendulum is

The period of a simple pendulum measured inside a stationary lift is found to be $T$. If the lift starts accelerating upwards with acceleration of $g/3,$ then the time period of the pendulum is

Two simple pendulums of lengths $1.44 \,m$ and $1\, m$ start swinging together. After how many vibrations will they again start swinging together

If the length of second pendulum becomes $\frac{1}{3}$ what will be its periodic time ?

If the length of a pendulum is made $9$ times and mass of the bob is made $4$ times then the value of time period becomes

If pendulum is released from given position find velocity of Bob when it reaches the lowest position