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densk [106]
4 years ago
12

A 40 foot beam that weighs 125 pounds is supported at the two ends by walls. It also supports a 600 pound AC unit 5 feet from th

e right hand wall. Calculate the force the right hand wall (closest to the AC) must support.
A) 588 pounds
B) 138 pounds
C) 725 pounds
D) 608 pounds

Physics
1 answer:
Dmitrij [34]4 years ago
8 0

Answer:

A) 588 pounds

Explanation:

According to the given conditions, we assume the beam to be simply supported at the ends carrying a uniformly distributed load of 125 pounds per feet and a point load of 600 pounds acting at 5 feet from the right support.

Referring the schematic:

<u>Moment about any point will be zero in equilibrium condition. </u>

∴Take moment about point L

F_r\times 40=125\times 20+35\times 600

F_r=587.5 lb

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