A beam is attached to a vertical wall with a hinge. The mass of the beam is 1000 kg, and it is 4 m long. A steel support wire is tied from the end of the beam to the wall, making an angle of 30° with the beam. (a) By summing the torque about the axis passing through the hinge, calculate the tension in the support wire. Assume the beam is uniform so that the weight acts at its exact center. (b) What is the minimum cross-sectional area of the steel wire so that it is not permanently stretched? The yield strength (elastic limit) for steel is 290 × 106N/m2, and the ultimate breaking strength is 400×106N/m2

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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.