Give reason for the following:

When a hanging carpet is beaten with a stick, the dust particles start coming out of it.

When a blanket is given a sudden jerk, the dust particles in it fall off due to inertia at rest. Dust particles were at rest on the carpet. However when you beat the carpet, you are forcing the dust to move along with the carpet. Due to the dust having inertia, it doesn't move, or rather, it resists motion. This is why dust comes out of a carpet when it is beaten with a stick.