2-92 | Engineering Statics | Resultants | Engineers Academy

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Engineering Statics by Meriam and Kraige!
Chapter 2: Force Systems
2-92 | Engineering Statics | Resultants | Engineers Academy
2/92 In the equilibrium position shown, the resultant of the three forces acting on the bell crank passes through the bearing O. Determine the vertical force P. Does the result depend on ?

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Hello. Thanks for the solution. Please let me know and correct me if I am wrong. There is something in my mind. Lets consider we fix the crank from 80N force point. Then if we increase the θ angle 5°, 20° angle will decrease and will be 15°. So that our P force will change. Isn't it?

mustafayesildal
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but why? if theta changed, the angle 20 degrees will change as will, why changing theta affect nothing?
thank you

HM