How does planking burn calories if there is no force * distance?
3471
Why does holding something up cost energy while no work is being done?
6836
Number of planks required to stop the bullet
12818
In calculating work done by a constant force over a constant distance, why doesn't the subject's initial velocity matter?
3153
Understanding weight on an inclined plane
22934
Validity of work-energy theorem in presence of non-conservative forces?
45613
Conservation of energy when slowing an object down
140005
How will a particle with energy less than $V_{\rm min}$ behave?
126037
What's wrong with Arnold's scaling argument on jumping height?
143944
Kinetic energy of a massive spring
44017
If an object rests on a table, not accelerating, how much work do both the object and the table do?
58628
Floating Objects and Weight
121320
Why is there conservation of kinetic energy in elastic collision and not in inelastic collision?
43961
Work done against gravity
133978
Mechanics of Horizontal Stretching and Shrinking
126078
Does paralysis prevent actions that don’t require movement?
140986
Can the kinetic energy be a function of the position vector?
48590
Does one's ability to use the Force depend on distance?