While performing simple harmonic motion, the ratio of kinetic energy at the mean position of the pendulum and potential energy at the maximum displacement is equal to 1.
The angular frequencies of two simple harmonic motion are 10 and 100 radians per second. If displacement (amplitude) is the same then the ratio of their maximum accelerations will be $\left(1: 10^2\right).$
The lengths of the second pendulum at two places are $l_1$ and $l_2$ respectively, the value of gravitational acceleration at those places $g_1: g_2$, will be $l_1: l_2$.
The time period of the pendulum hanging from the roof of a stationary vehicle is T. When the car is accelerated with a uniform acceleration a, the time period of the beam will increase.