Physics, 19.10.2020 17:01 erinmcdonald6673

A pile of bricks of mass M is being raised to the tenth floor of a building of height H = 4y above the ground by a crane that is on top of the building. During the first part of the lift, the crane lifts the bricks a vertical distance h1=3y in a time t1=4T. During the second part of the lift, the crane lifts the bricks a vertical distance h2=y in t2=T. Which of the following correctly relates the power P1 generated by the crane during the first part of the lift to the power P2 generated by the crane during the second part of the lift? A. P2=4P1
B. P2=43P1
C. P2=P1
D. P2=34P1
E. P2=13P1

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A pile of bricks of mass M is being raised to the tenth floor of a building of height H = 4y above t...

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