Two blocks of masses $$5$$ kg and $$2$$ kg are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of $$14$$ $$m/s$$ to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are respectively:

Question

Infinity Learn · Accepted Answer

vcm $$=$$ $$m1v1+m2v2m1+m2$$ $$=$$ $$2$$×$$0+5$$×$$142+5$$ $$=$$ $$10$$ $$m/sv1-Vcm$$ $$=$$ $$14-10$$ $$=$$ $$4$$ $$m/sv2-Vcm$$ $$=$$ $$0-10$$ $$=$$ $$-10$$ $$m/s$$

Two blocks of masses 5 kg and 2 kg are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of 14 m/s to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are respectively:

Unlock the full solution & master the concept.

Ready to Test Your Skills?

free study material