(a) A block of mass is placed on a shelf above the ground. Calculate its…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

(a) A block of mass

4\,\text{kg}

is placed on a shelf

2\,\text{m}

above the ground. Calculate its gravitational potential energy relative to the ground. Take

g = 9.8\,\text{m/s}^2

. (b) The block is replaced by another block of mass

2\,\text{kg}

kept on a higher shelf

6\,\text{m}

above the ground. Determine the new gravitational potential energy and state by what factor the energy has changed compared with part (a).