A body of mass is attached to a hanging spring whose force constant is

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A body of mass

100\,\text{g}

is attached to a hanging spring whose force constant is

10\,\text{N m}^{-1}

. The body is lifted until the spring is in its unstretched state and then released. Calculate the speed of the body when it strikes the table

15\,\text{cm}

below the release point. (1)

1\,\text{m s}^{-1}

(2)

0.866\,\text{m s}^{-1}

(3)

0.225\,\text{m s}^{-1}

(4)

1.5\,\text{m s}^{-1}