A 120--wide sign hangs from a 5.3 , 200--long pole. A cable of negligible mass supports the end...
Homework Answers
Tan Ø = 250/200
Ø = 51.3deg
upward mass = 340 sin 51.3 / 9.8 = 29.82kg
(note: it is easier to convert this load to a mass, than convert other masses to Force then convert the final answer back to mass)
take moments around the pivot point on the all
5.3 x 1 + M x 1.4 = 29.82 x 2
5.3 x 1 + M x 1.4 = 59.64
1.4M=54.34
M=38.81 kg
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