Final answer:
The question involves determining the angle formed by a rod connecting two wheels in equilibrium.
Step-by-step explanation:
The given question involves the equilibrium of a system consisting of two wheels connected by a uniform rod. The question asks to determine the angle that the rod forms with the horizontal when the system is in equilibrium.
To solve this problem, we need to consider the forces acting on the rod, including the weights of the wheels, the normal reaction forces, and the weight of the rod itself. By setting up the equilibrium condition, we can find the angle at which the rod is in balance.
For a more detailed explanation and solution to this problem, please refer to the given reference which provides step-by-step instructions.