Mechanical Equilibrium Quiz
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Questions and Answers

Which of the following is a correct definition of mechanical equilibrium?

  • A particle is in mechanical equilibrium if the net force on that particle is changing.
  • A particle is in mechanical equilibrium if the net force on that particle is non-zero.
  • A particle is in mechanical equilibrium if the net force on that particle is constant.
  • A particle is in mechanical equilibrium if the net force on that particle is zero. (correct)

In terms of momentum, a system is in equilibrium if...

  • The momentum of its parts is all constant. (correct)
  • The momentum of its parts is changing.
  • The momentum of its parts is zero.
  • The momentum of its parts is non-zero.

In a rotational mechanical equilibrium, what is the condition for equilibrium?

  • The angular momentum of the object is zero.
  • The angular momentum of the object is changing.
  • The angular momentum of the object is conserved and the net torque is zero. (correct)
  • The angular momentum of the object is non-zero.

In conservative systems, equilibrium is established at a point where...

<p>The gradient of the potential energy with respect to the generalized coordinates is zero. (B)</p> Signup and view all the answers

If a particle in equilibrium has zero velocity, it is in...

<p>Static equilibrium. (D)</p> Signup and view all the answers

In classical mechanics, what is the condition for a particle to be in mechanical equilibrium?

<p>The net force on the particle must be zero.</p> Signup and view all the answers

How is mechanical equilibrium defined for a physical system made up of many parts?

<p>The net force on each individual part must be zero.</p> Signup and view all the answers

What is the condition for a system to be in equilibrium in terms of momentum?

<p>The momentum of its parts must be constant.</p> Signup and view all the answers

How is equilibrium defined for a system in terms of velocity?

<p>The velocity of the system must be constant.</p> Signup and view all the answers

In a rotational mechanical equilibrium, what is conserved?

<p>The angular momentum of the object.</p> Signup and view all the answers

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