1 An object of mass is lifted at constant velocity a vertical distance in time

PHYSICS · Single correct · GCSE · Physics · Energy · Energy

Problem

1 An object of mass

m

is lifted at constant velocity a vertical distance

H

in time

T

. The power supplied by the lifting force is (A) mgHT (B)

\mathrm{mgH} / \mathrm{T}

(C)

\mathrm{mg} / \mathrm{HT}

(D)

\mathrm{mgT} / \mathrm{H}

(E) zero