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Principle-of-Virtual-Work

For equilibrium, net moment acting on body by various forces is zero, in any of body in space, as in space it is acted by various forces, like gravity.


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This Chapter Principle-of-Virtual-Work consists of the following topics

For the conditions of the equilibrium of the body, i.e. the rigid body only the external forces defines the equilibrium. And the support reactions only cancels out the rotation part of the body and thus the potential energy of the body is stored in it.

For equilibrium, net moment acting on body by various forces is zero, in any of body in space, as in space it is acted by various forces, like gravity.

We use sometimes the measures to know the direction of moment in the calculations of the moments caused by the gravitational forces over the body above the ground level. Which one is right about it(consider the mentioned axis to be positive)?

For equilibrium

the net moment acting on the body by various forces is zero

in any of the body in the space

as in the space it is acted by various forces

like gravity.

Principle of Virtual Work

Engineering-Mechanics