Which of the following examples represent periodic motion? A freely suspended bar magnet displaced from its N-S direction and released.

Which of the following examples represent periodic motion? A freely s

1.	Which of the following examples represent periodic motion? A freely suspended bar magnet displaced from its N-S direction and released.
Answer» Solution :It is a PERIODIC motion because a freely suspended magnet if once DISPLACED from N-S direction and released, it OSCILLATES about its position. Hence, (b) will be the SHM.