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1 vote
0 answers
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Aren't the virtual work/virtual power principles in mechanics simply solving for the vector differential equation of motion in a preferred direction?

My conceptual understanding of the virtual work/virtual power principles is that, by hypothesizing "virtual displacements"/"virtual velocities", one can solve the equations of ...
jvf's user avatar
  • 245
0 votes
1 answer
133 views

The "coefficients" of virtual displacement in Goldstein's classical mechanics

In Goldstein's classical mechanics the following passage is confusing me: We therefore have as the condition for equilibrium of a system that the virtual work of the applied forces vanishes: $$\sum_i ...
Charlie's user avatar
  • 6,963
1 vote
2 answers
728 views

What is the difference between the principle of virtual work and the principle of virtual displacement?

When I read Reddy's book, "Energy Principles and Variational Methods in Applied Mechanics", Chapter 5.1. I am confused with the two jargons "the principle of virtual displacement" and "the principle ...
Jonas Lionel's user avatar
2 votes
1 answer
329 views

Why does a system have to be holonomic?

So I'm doing some work from Taylor's mechanics book. He says for the problems in the book, we require the system to be holonomic - that is the number of generalized coordinates = number of Deg. of ...
milanios's user avatar