Question

Rotation of the earth is a periodic motion. Justify.

Answer 1

The motion of the earth rotating on its axis once in 24 hours is a kind ofperiodic motion because the time duration of 24 hours is fixed.Therotation of the earth on its axis isperiodic motion

Answer 2

Periodic motion, in physics, is the kind of motion which is repeated in equal intervals of time. Rotation of earth on its axis replicates its motion after a fixed period of time, so its movement is periodic. The motion of the earth revolving on its axis in every 24 hours is a kind of periodical motion because the time span of 24 hours is fixed.