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### Physics For Scientists & Engineers

Book edition 9th Edition
Author(s) Raymond A. Serway, John W. Jewett
Pages 1624 pages
ISBN 9781133947271

# An ice cube has been given a push and slides without friction on a level table. Which is correct? (a) It is in stable equilibrium. (b) It is in unstable equilibrium. (c) It is in neutral equilibrium. (d) It is not in equilibrium.

The correct option is (c): It is in neutral equilibrium.

See the step by step solution

## Frictionless motion

If two bodies in contact with each other move relative to each other and the values of friction between both bodies are zero, the motion of the bodies is said to be frictionless motion.

In the frictionless motion between two bodies in contact, there are no energy losses; the acceleration value of the body is zero.

## Equilibrium of ice cube

It is given an ice cube resting on a level is given a push and slides without friction on the table. Since there is no friction between the ice cube and the table surface, the ice cube moves at a constant speed on the table surface.

The value of the speed of the ice cube is constant, so there is no acceleration of the ice cube. It means that the ice cube never returns to its original position, so the ice cube is in the neutral equilibrium condition.

Hence, the correct option is (c): It is in neutral equilibrium.