(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Give two examples of couple actions in our daily life.

P, Q and R are three forces which act as shown in fig.

The point O lies in the same plane. Given, P = Q = R = 10N

(i) Which force has the least moment about O? Give a reason.

(ii)Which force has the greatest moment about O? Give a reason.

State the conditions of equilibrium for a rigid body.

A uniform circular motion is an accelerated motion. Justify it.

Explain the difference between a uniform linear motion and a uniform circular motion.

Is the motion of moon around the earth in circular path an accelerated motion?

Does the earth move around the sun with a uniform velocity?

Name the force acting away from the centre of circular path.

What is the purpose of a machine?

Give an example for each of the following uses of a machine:

to obtain gain in force,

Work is the application of a ....... through a distance.

A boy does work when he pushes against a brick wall. (yes/no).

What is the SI unit of work?

Nm is the unit of .......

What is the work done when the object acted upon by a force remains at rest?

Is work done a scalar or a vector physical quantity?

A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms^-2, what is the work done?

What is the work done against gravity when a body is moved horizontally along a frictionless surface?