Ball bearings are used in bicycles, cars, etc., because

When a stone tied to a string is whirled in a circle, the work done on it by the string:

The meter that is used to measure the distance moved by the vehicle is known as

Why do pendulum clocks usually lose time in summer?

A mass is attached to a spring that hangs vertically. The extension produced in the spring is 6 cm on Earth. The acceleration due to gravity on the surface of the Moon is 1/6th of its value on Earth.…

A rod is balanced vertically on one of its ends. Which one among the following is the correct nature of its state of equilibrium?