Q6.21Multiple correct
Two blocks M1 and M2 having equal mass are free to move on a horizontal frictionless surface. M2 is attached to a massless spring as shown in Fig. 6.10. Iniially M2 is at rest and M1 is moving toward M2 with speed v and collides head-on with M2.
This question refers to a figure in the original PDF.
- (a)While spring is fully compressed all the KE of M 1 is stored as PE of spring. Work, Energy and Power
- (b)While spring is fully compressed the system momentum is not conserved, though final momentum is equal to initial momentum.
- (c)If spring is massless, the final state of the M1 is state of rest.
- (d)If the surface on which blocks are moving has friction, then collision cannot be elastic. Fig. 6.10