Consider the Fig. 9.3,

Let us consider the reactive forces are Ax, Ay and N on two rigid bodies. Both these bodies are considered to be in equilibrium so there will be no work.

If P and Q acts on the bodies to do virtual work, the internal forces will act as reactive forces to cancel the total work.

Links of Previous Main Topic:-

• Introduction concept of equilibrium of rigid body
• Friction introduction
• Introduction about distributed forces
• Area moments of inertia in rectangular and polar coordinates
• Mass moment of inertia introduction
• Work done by force
• Sign convention of mechanical work

Links of Next Mechanical Engineering Topics:-

• Kinematics of particles
• Position vector velocity and acceleration
• Plane kinematics of rigid bodies introduction
• Combined motion of translation and rotation

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