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A crane uses 7000 Btu/h to raise a 200-lbm box 60 ft. How
Chapter 3, Problem 292EUP(choose chapter or problem)
QUESTION:
Problem 292EUP
A crane uses 7000 Btu/h to raise a 200-lbm box 60 ft. How much time does it take?
Questions & Answers
QUESTION:
Problem 292EUP
A crane uses 7000 Btu/h to raise a 200-lbm box 60 ft. How much time does it take?
ANSWER:
Solution 292EUP
Step 1 of 2:
We are going to find the time taken by the crane to raise the box of mass m to a height h.
The mass of the box m = 200 lbm
The height h = 60 ft
The power delivered by the crane P = = 7000 Btu/h = 1.944 Btu/s = 1510 ft.lbf/s
The acceleration due to gravity g = 32.174 ft/s2