A pallet of bricks is to be suspended by attaching a rope to it and connecting the other end to a couple of heavy crates on the
roof of a building, as shown. The rope pulls horizontally on the lower crate, and the coefficient of static friction between the lower crate and the roof is 0.666. What is the weight of the heaviest pallet of bricks that can be supported this way?
A. 400 lb
B. 350 lb
C. 250 lb
D. 266 lb
A. 400 lb
B. 350 lb
C. 250 lb
D. 266 lb
1 answer:
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Answer:
Explanation:
The rotation rate of the man is:
The resultant rotation rate of the system is computed from the Principle of Angular Momentum Conservation:
The final angular speed is: