A block of mass slides down a smooth track and compresses a horizontal spring of…

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

Problem

A block of mass

m

slides down a smooth track and compresses a horizontal spring of force constant

k

. What is the kinetic energy of the block at the instant the spring attains its maximum compression? (a)

m g h

(b)

\dfrac12 k x^{2}

(c)

0

(d)

m g h - \dfrac12 k x^{2}