Work, Energy and Power — Physics STD 11 — Question

The angular velocity and the amplitude of a simple pendulum are ω and a, respectively. The ratio of its kinetic and potential energies at a displacement x from the mean position is ……….

If the two colliding bodies stick together after collision such collisions are

Beats occur because of

Two forces are in the ratio of 3 : 4. The maximum and minimum of their resultants are in the ratio is –

Speed of sound in a gas in proportional to …….

The period of oscillation of a simple pendulum is T in a stationary lift. If the lift moves upwards with an acceleration of 8g, the period will ……..

Two balls of equal masses moving with velocities 10 m/s and -7 m/s respectively collide elastically. Their velocities after collision will be

if the direction of torque is out of the paper then the rotation produced by the torque is –

The weight of a body in air is 100 N. How much will it weight in water, if it displaces 400 cc of water?

Non conservative force is