Example of free body diagram:
The three spheres A, B, C are placed in groove shown in the figure given below. The diameter of each sphere is 100mm. Sketch the free body diagram of component B. Assume that the weight of spheres A, B, C as 1KN, 2KN and 1KN in that order.
Sol.: For θ,
cosθ = 50/100, cosθ = .5 , θ= 60°
FBD of block B is given in the given figure.