As shown, there is no friction between horizontal surface and the lower block `(M = 3 kg)`.
Channel: Doubtnut
Date: 12/04/2020

As shown, there is no friction between horizontal surface and the lower block `(M = 3 kg)`. But friction coefficient between both the block is `0.2`. Both the blocks move together with initial speed v towards the spring of force constant `k = 400 N//m` and compresses it. What can be the maximum valure of v, so that during the notion there is no slipping between the blocks ?  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/BSL_XI_RT_P8_E01_341_Q01.png" width="80%"