Machine A lifts a crate to a height of in

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

Problem

Machine A lifts a

200\,\text{kg}

crate to a height of

10\,\text{m}

50\,\text{s}

. Machine B lifts a

150\,\text{kg}

crate to a height of

12\,\text{m}

30\,\text{s}

. Take

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

. Which machine delivers greater power? (a) Machine A (b) Cannot be compared without knowing

g