(Solved): A slider crank mechanism is shown in Figure 3. Link lengths of link2 and link3 are equal (r). Force ...

Expert Answer

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First, we'll start by drawing the mechanism:



Now, let's draw the free-body diagrams for each link:
Link 1 (ground):


No external forces act on the ground link, so there are no forces to consider in its free-body diagram.

2. Link 2 (crank):



Force P? is applied at the middle of link 2, at a distance of r/2 from point O?.
The weight W acts downward at the center of link 2.
There is a reaction force R? at the joint O? to balance the forces.