The blocks of weight WA= 80 lb and WB = 20 lb are connected by a cable and pulley sys- tem and the rough surface (p = 0.20) is in- clined at an angle = 60°. Determine the acceleration of block A when the system is released from rest. Neglect the mass of the pulleys and cord.

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Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.