Forces36 - (2 Does the connection allow the two...

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(2) Does the connection allow the two connected solids rotate relative to each other? If so, what is the axis of relative rotation? There can be no component of reaction moment parallel to the axis of relative rotation. (3) For certain types of joint, a more appropriate question may be ‘Is it really healthy/legal for me to smoke this?’ 2.4.3 Drawing free body diagrams with constraint forces When we solve problems with constraints, we are nearly always interested in analyzing forces in a structure containing many parts, or the motion of a machine with a number of separate moving components. Solving this kind of problem is not difficult – but it is very complicated because of the large number of forces involved and the large number of equations that must be solved to determine them. To avoid making mistakes, it is critical to use a systematic, and logical, procedure for drawing free body diagrams and labeling forces.
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