O A horizontal plank has a rectangular block placed on it

Last updated: 6/1/2023

O A horizontal plank has a rectangular block placed on it The plank stars oscillating vertically and simple harmonically with an amplitude of 40 cm the block just loses contact with the plank when the later is momentary at rest Then a the period of oscillating is 27 5 s b The block weighs double its weight when the plank is at one of the positions of momentary at rest c the block weight 1 5 times its weight on the plank half way down d The block weights its true weight on the plank when the latter moves fastest