Question. A uniform power pole of mass m and lenght L is hoisted into a vrtical position with its lower end supported by a fixed pivot at 0. The wires supporting the wires are accidently released, and the pole falls to the ground. Find the x- and y- componnts of the force exerted on the pole at 0 in terms of θ.
Please solve it.
106Find the angular acceleration as a function of θ
Then simply use laws of motion
Solution:
mglsinθ/2 = ml2α/3
=> α = 3gsinθ/2l
=> acm = αl/2 = 3gsinθ/4
Let the hori comp. of pivot be Nx and vert comp be Ny
resolving forces and accelerations u can find Nx and Ny