Is external force equal to restoring force
49049
If string is stretched just by weight, where does the gravitational potential energy goes if only half is converted to elastic potential energy?
131958
Why is the potential energy equal to the negative integral of a force?
125082
Why is force a vector?
51275
What is force? How does a constant force output a nonconstant power?
111394
Does conservation of momentum really imply Newton's third law?
144615
How much work can a force on a spring do? (Why are two methods wrong?)
101294
For a massless pulley moving upwards with acceleration, is the upward force equal to the downward force?
128242
Are gravitational force and gravitational time dilation proportional?
121639
Is momentum conserved in this situation?
108081
Is there some special case where a fermion can mediate a force?
15338
Why is the centre of mass displaced even when external force is 0?
42630
Can internal forces do work?
133439
Can the weak force create a bound state?
89839
What is function of force $F$ and work $W$?
68906
Do the same equations of motion imply the same Lagrangians?
155223
Is there a reaction force for a reaction force?
62218
Why should Conservative forces have their curl equal to zero?(intuition)