One horsepower is equal to how many foot-pounds of work per second?
a. 450 ft-lb
b. 250 ft-lb
c. 150 ft-lb
d. 550 ft-lb
answer is d

Option (d) will be the correct option

Explanation:

We know that 1 horse power is equal to 745.7 watt

We have to convert this J/sec to foot-pound/sec

Other unit of watt is joule/sec

So 1 horse power = 745.7 J/sec

We know that 1 joule = 0.7375 foot-pond

So 745.7 J =

So 745.7 j/sec = 550 foot-pound/sec = 550 ft-lb

So option (d) is the correct option

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