A toy gun uses a spring of constant

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

Problem

A toy gun uses a spring of constant

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

. The spring is compressed by

0.15\,\text{m}

and then released to launch a

0.050\,\text{kg}

dart. If only

70\%

of the elastic potential energy is converted into the kinetic energy of the dart, find the launch speed of the dart.

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