When a force resists the relative motion between two surfaces, it is called _______

Question

Question

This question was previously asked in

SSC GD Previous Paper 18 (Held On: 19 Feb 2019 Shift 1)_English

Answer 1

The correct answer is Friction.

The resistance offered by the surfaces that are in contact with each other when they move over each other is known as friction.
Friction works in the opposite direction in which the body is moving making the body slow down.
There are four types of friction:
- Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.
- Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.
- Rolling friction is defined as the force which resists the motion of a ball or wheel and is the weakest type of friction.
- Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.

Additional Information

Term	Meaning
Resistance	Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms.
Convection	Convection is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock.
Induction	Induction is the magnetic field which is proportional to the rate of change of the magnetic field.