Question

State and explain D'Alembert's principle. Obtain lagrange's equation of motion from D'Alembert's principle.

Answer 1

Lagrange - D'Alembert Principle : Theprinciple states that the sum of the differences between the forces acting on a system of mass particles and the time derivatives of the momenta of the system itself along any virtual displacement consistent with the constraints of the system, is zero

Answer 2

Lagrange - D'Alembert Principle :

The principle states that the sum of the differences between the forces acting on a system of mass particles and the time derivatives of the momenta of the system itself along any virtual displacement consistent with the constraints of the system, is zero.