Question

How fast can work be done by a 5hp engine?

2,750 ft-lbs

3,650 ft-lbs

2,700 ft-lbs

2,600 ft-lbs​

Answer 1

So the answer is 2,750 ft-lbs.

Explanation:

One horsepower is equal to 550 foot pounds per second. Therefore, a 5 horsepower engine can do work at a rate of:

5 hp * 550 ft-lbs/sec = 2,750 ft-lbs/sec

So the answer is 2,750 ft-lbs.

Answer 2

Explanation:

The answer depends on the units of power given. If the 5hp engine refers to a horsepower rating, then the answer is not one of the options given, but can be calculated using the conversion factor:

1 horsepower = 550 foot-pounds per second

Therefore, 5 horsepower = 5 x 550 = 2,750 foot-pounds per second

If the options given refer to work done over a certain time period, then it's not possible to determine the speed at which work can be done by a 5hp engine without more information.