- #1
momo1111
- 10
- 0
Homework Statement
A ball bounces down a uniform flight of stairs of height H , rising after each
bounce to to the level h of the previous stair .
the velocity of the ball before the impact is equal in all the impacts .
what is the average power of energy loss ?
Homework Equations
The Attempt at a Solution
first attempt :
at points A ,B, the ball has just a potential energy, ball’s horizontal velocity seems to be
not relevant (cancel out ).
in A - E = mg(h+H)
in B - E = mgh
EA = EB + Wothers
Wothers = mg(h+H) - mgh = mgh
...
So the energy loss is actually a constant ...
what I'm missing ?