Question

Arun is travelling with his friends in a car. The car suddenly stops due to some problem in the engine. If Arun and his friends apply a force of 1000 N to drag the car to the nearest garage that is 1.2 km from that place, determine the total power required if the dragging time is 20 minutes.

• A. 2000 W
• B. 3000 W
• C. 1000 W
• D. 500 W

Answer 1

The correct option is C

1000 W

As work done is given as = force $\times$ displacement
$Power=\frac{Workdone}{time}$
$Power=\frac{1000\times 1200}{20\times 60}=1000W$