Question

If a soldier lifts a 2-kg counterweight 0.5 meter, how much work is done?

Answer 1

Answer:

zero

Step-by-step explanation:

if counter weight ...

he lifts it perpendicularly..

angle is 90°

so..

w = f*d*cos ¢

¢ = 90°

so

cos 90° = 0

and

work = 0 watt