static equilibrium problems

Solution 3 sin m m n n

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Unformatted text preview: ude of the force F+ exerted by the shoulder joint on the upper arm. Solution: 3 %*, sin % +% &- m +% %- ° ! $ ! $ +% !m N +& N cos & +& + )* ° N sin ° ! !$ " " kg N m/s " "! N N +& P30. A shop sign weighing 215 N is supported by a uniform 135-N beam as shown in Fig.12-70. find the tension in the guy wire and the horizontal and vertical forces exerted by the pin on the beam. Solution: Condition for the equilibrium of the sign: N Condition for the equilibrium of the beam: .* sin "N 'm sin " ° N "m 'm N # 4 %- .* % % .* % &- N cos " ° # .* & & .* & N "N "N N sin " ° # '" N we supposed...
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