- #1
transgalactic
- 1,395
- 0
the potential energy of a body which mass is "m"
and which is moving in one demention is given by:
U(x)=U0 * (a/x + x/a -2)
what is the power which being put on the body
the solution says F=-dU/dx=U0(-1/a + a/x^2)
which means that they are doing a derivative to the original expression.
but i can't understand why the derivative of potential energy is its power.
from high school i know the potential energy is U=m*g*h
and the only derivative that i know is for a(t)=v'(t) v(t)=x'(t)
so their solution is not logic to me at all
?
and which is moving in one demention is given by:
U(x)=U0 * (a/x + x/a -2)
what is the power which being put on the body
the solution says F=-dU/dx=U0(-1/a + a/x^2)
which means that they are doing a derivative to the original expression.
but i can't understand why the derivative of potential energy is its power.
from high school i know the potential energy is U=m*g*h
and the only derivative that i know is for a(t)=v'(t) v(t)=x'(t)
so their solution is not logic to me at all
?