JEE Main202117 Mar 2021Evening ShiftPhysicsLaws of MotionActual
Two identical blocks A and B each of mass m resting on the smooth horizontal floor are connected by a light spring of natural length L and spring constant K . A third block C of mass m moving with a speed v along the line joining A and B collides with A .The maximum compression in the spring is
Options
- Av m 2 K
- Bm v 2 K
- Cm v K
- Dm 2 K
Correct answer
A. v m 2 K
Step-by-step solution
C comes to rest V c m of A   &   B = v 2 ⇒ 1 2 is v ret 2 = 1 2 k x 2 x = μ × v 2 k = m 2 k × v .