Question

A crane lifts a 2.25x103N bucket containing 1.15m3 of soil (density 2.00x103kg/m3) to a height of 7.50m. Calculate the energy transformation (work) the crane performs.

Answer 1

Answer

Volume of soil V=1.15$m^3$

density$\rho =2.00\times10^3kg/m^3$

Height H=7.50m

energy transformation (work) the crane performs

Work or energy

W=$\rho VgH$

Putting all values

$W=2\times10^3\times 1.15\times9.81\times7.5$

W=169,222.5 Joules