New answers tagged

2 votes

For rotational equilibrium of a rigid object, about which point does the torque of the body have to be zero?

The torque has to be zero about all points -- if it was nonzero for some point, the object would start to rotate around that point. On the other hand, you often see that the torque is calculated ...
user avatar
  • 3,560
1 vote

For rotational equilibrium of a rigid object, about which point does the torque of the body have to be zero?

For rotational equilibrium of an object, the sum of the torques about any point on the object must be zero. Hope this helps.
user avatar
  • 55.4k
0 votes

Problem with possibly infinite possible solutions

I would approach this through a series of similar but simpler problems. (1) The left hand force is $10$ N. The right hand force is $15$ N, which is $5$ N bigger. $F_L$ <-- | _ | -- $T$ -- | _ | --&...
user avatar
  • 25.4k
1 vote

Problem with possibly infinite possible solutions

I don't see any obvious problems with your analysis. This problem appears to be statically indeterminate. If so, the "real" value of the tension would be determined by knowing the material ...
user avatar
0 votes

What are some good articles on trend to equilibrium?

Handbooks on statistical mechanics/physics seem to be some starting "space" for discussion - there are many among them, which are formulated in maximally mathematical way, which really TRY ...
0 votes

What is the meaning of a conductor in equilibrium?

You have an isolated conductor. You give some charge to it. This charge is free to move on conductor. The char will move until it reaches an 'equilibrium' condition. That is, net force on all free ...
user avatar
0 votes

Adiabatic piston: why is Callen's argument flawed?

What is meant by It was then noted that Callen's argument, which was repeated by Leff, could not be correct since the equilibrium condition was derived from the first law, rather than the second law. ...
user avatar
0 votes

Lever and principle of moments

Just to complete @John Darby’s answer, the two conditions of equilibrium (compensating force and compensating torque) may seem a bit parachuted for a newcomer. These conditions and the relevance of ...
user avatar
  • 1,145
0 votes

Lever and principle of moments

Mechanical equilibrium means the body is in "uniform translational and rotational motion". For a body initially at rest, as here, the body remains at rest. The system is in mechanical ...
user avatar
  • 5,825

Top 50 recent answers are included