Question

How much horsepower is needed to lift a box that is 10 pounds 3 feet in 10 seconds?

30 ft-lbs/sec
3 ft-lbs/sec
O 3000 ft-lbs/sec
300 ft-lbs/sec

HELP FAST!

Answer 1

Given:-

• Force = 10lb.
• distance = 3ft.

Solution:-

Formula used:

• Work = (force) x (distance)

Work to lift the box:

• Work = (10 lb) x (3 ft)

• Work = 30 ft-lbs

Power = (work done) / (time to do the work)

• Power = (30 ft-lbs) / (10 seconds)

• Power = 3 ft-lbs/second

• 1 Horsepower = 550 ft-lbs/second

(3 / 550) = 0.0055 Horsepower