force=energy: physics
TOTALLY INCORRECT!
Get you physics right next time before you start arguing with me, or any chemistry or biology questions, oh yea, and mathematical concepts.
Force is measured in NEWTONS, which is F=ma, mass times acceleration. it means more force is applied, but not necessarily more energy, you can understand this concept provided that you have a functional brain.
The energy type we mostly talk about in piano playing is kinetic and gravitational potential
Kinetic energy = (m*v^2)/2
Gravitationl potential = m*g*h
It it uses a mixture of both kinetic and GPE, and it is measured in JOULES! That is the unit for measuring units.
Next time, please revise or learn or get a brain before you start talking about things over your level.