Question

Answer the following question.

Distinguish between real and pseudo force.

Answer 1

	Real force	Pseudo Force
1.	A force which is produced due to interaction between the objects is called real force.	A pseudo force is one which arises due to the acceleration of the observer’s frame of reference.
2.	Real forces obey Newton’s laws of motion.	Pseudo forces do not obey Newton’s laws of motion.
3.	Real forces are one of the four fundamental forces.	Pseudo forces are not among any of the four fundamental forces.
4.	Example: The earth revolves around the sun in a circular path due to the gravitational force of attraction between the sun and the earth.	Example: Bus is moving with an acceleration (a) on a straight road in forward direction, a person of mass ‘m’ experiences a backward pseudo force of magnitude ‘ma’.