When two objects rub against each other which force is acting on both the objects?
Magnetic
Friction
Gravitation
Non-contact
When two objects rub against each other, the force of resistance is felt. This is called frictional force or friction. It is a contact force.
Name :
(a) The force applied when a potter turns his wheel.
(b) A substance that develops static-electricity on rubbing.
(c) A device that shows the gravitational force acting on an object.
(d) A force that always acts against motion.
When two objects slide against each other, the force that works against it is ____.
Which of the following is/are true about the frictional force?
1. It acts between all moving objects.
2. It always opposes relative motion between two objects.
3. It is a contact force.
4. It is a non- contact force.