New posts in Work

Why is the work done on a charge calculated from infinity?

How much work can a force on a spring do? (Why are two methods wrong?)

Sum of exact differentials is inexact?

Which requires more energy: walking 1 km or cycling 1 km at the same speed?

What is behind the definitions of work and energy?

Why is the potential energy equal to the negative integral of a force?

What is the energy source if a tall water tank is used to transfer floating objects upwards instead of cables with motors?

Why can't a magnet change a charged particle's speed?

How can a magnetic field accelerate particles if it cannot do work?

What is the meaning of the negative sign in $W = -\Delta U$?