Question: Spring AB is supported by a frictionless roller at B so that it is always vertical. If the spring is unstretched when 0 =

Spring AB is supported by a frictionless roller at B so that

Spring AB is supported by a frictionless roller at B so that it is always vertical. If the spring is unstretched when 0 = 0, determine 0 and the forces in spring AB and bar AC when F has the value indicated. Hint: The force supported by bar AC is zero when 0 < 90, and it may be nonzero when 0 = 90. (a) F = 25 lb. (b) F = 50 lb. k = 1 lb/in. Te 38 in. wwwwww A

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