Physics

Problem

A winch lifts a crate vertically upward at a constant speed of

0.80\,\text{m}\,\text{s}^{-1}

while supplying

2.5\,\text{kW}

of mechanical power. Neglect air resistance. What is the mass of the crate? a)

2.6\times10^{2}\,\text{kg}

1.6\times10^{2}\,\text{kg}

3.2\times10^{2}\,\text{kg}

3.9\times10^{2}\,\text{kg}