Spring scale A is attached to the floor and a rope runs vertically upward, loops

Question

Spring scale A is attached to the floor and a rope runs vertically upward, loops over the pulley, and runs down on the other side to a W = 82-N weight as shown. Scale B is attached to the ceiling and the pulley is hung below it. What are the readings of the two spring scales, A and B? Neglect the weights of the pulley and scales.

Scale A N Scale B N Spring scale A is attached to the floor and a rope runs vertically upward, loops over the pulley, and runs down on the other side to a W = 82-N weight as shown. Scale B is attached to the ceiling and the pulley is hung below it. What are the readings of the two spring scales, A and B? Neglect the weights of the pulley and scales.

Explanation / Answer

A=tention=W

B=tention in both side of ropes=2*w

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