An electric hoist lifts a crate vertically upward with a power output of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

An electric hoist lifts a

60\,\text{kg}

crate vertically upward with a power output of

1.5\,\text{kW}

. Taking

g = 10\,\text{m\,s}^{-2}

, find the speed at which the crate is being raised. (a)

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

(b)

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

(c)

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

(d)

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