Physics

Problem

A crane lifts a

1200\,\text{kg}

load vertically through

15\,\text{m}

20\,\text{s}

. Take

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

. Neglecting losses, the average power developed by the crane engine is closest to a)

12.1\,\text{hp}

11.8\,\text{hp}

8.8\,\text{hp}

15.8\,\text{hp}