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Nonamiya [84]
4 years ago
13

How much work is done lifting a 10 pound calculus book from the ground to the top of a 30 foot building with a cable which weigh

s 2 pounds per foot?
Mathematics
1 answer:
OverLord2011 [107]4 years ago
8 0

Answer:

  1200 ft·lb

Step-by-step explanation:

On average, you're lifting the 60-lb cable a distance of 15 ft, so doing 900 ft·lb of work. Lifting the 10-lb calculus book 30 ft requires 300 ft·lb of work.

The total work is 900 ft·lb + 300 ft·lb = 1200 ft·lb.

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