1.

A block of mass 2 kg collides with a horizontal masslessspring of force constant 2 Nm^-1 . The block compresses thespring 4 m from the rest position. Speed of the block at theinstant of collision is(a) 16 m/s(c) 8 m/s(b) 4 m/s(d) 12 m/s

Answer»

assuming that the coefficient of kinetic friction between the block and horizontal surface of0.25



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