A push or a pull

Magnets can exert a push or pull on objects without making contact with them.

An object is pushed and pulled along a certain angle with respect to horizontal and is moved the some distance on the ground. Now the work done by frictional force will be more in

If action is always equal to the reaction, explain how a horse can pull a cart.

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude of frictional force depends on the nature of the two surfaces in contact.

A boy is seated in a revolving chair revolving at an angular speed of 120 revolutions per minute. Two heavy balls form part of the revolving system and the boy can pull the balls closer to himself or may push them apart. If by pulling the balls closer, the boy decreases the moment of inertia of the system from 6 kg-m^2 to 2 kg-m^2 what will be the new angular speed?

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude fo frictional force depends on the nature of the two surfaces in contact.

In Physics, reading a book and pushing a wall are considered to be work.

A wooden block of 100 kg is about to be pushed on a floor of coefficient of friction 0.4. What is the magnitude of the force of friction on the wooden block when it is just pushed ?

A man pushes a wall and fails to displace it.He does

A person pushing a wall hard is liable to fall back. Give reason.