A motor lifts a load to a height of in

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

A motor lifts a

40\,\text{kg}

load to a height of

20\,\text{m}

in

8\,\text{s}

. Take

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

. What is the power output of the motor? (a)

1000\,\text{W}

(b)

7840\,\text{W}

(c)

980\,\text{W}

(d)

490\,\text{W}

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