A block of mass is pressed against a horizontal spring of force constant so that the…

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A block of mass

m

is pressed against a horizontal spring of force constant

k

so that the spring is compressed by a distance

a

from its natural length and then released from rest on a frictionless surface. (i) Calculate the speed

v

of the block at the instant the spring returns to its natural length. (ii) If

m = 0.50\,\text{kg}

k = 100\,\text{N\,m}^{-1}

and

a = 0.10\,\text{m}

, determine the numerical value of

v