2006-12-15 12:38:35 · 4 answers · asked by einstein_physics_1989 1 in Science & Mathematics ➔ Physics
work done by force of friction equals
force of friction * displacement
FF*displacement=Work donebyforceoffriction
2006-12-15 12:39:58 · answer #1 · answered by coolchap_einstein 3 · 0⤊ 0⤋
Frinctional Force = friction constant * mass * gravity +or- Force pushing down or pulling up on it.
Force pushing down or pulling up on it can be found taking the force times the sin of the angle formed by the force and the horizontal plane. Like 10 degrees from level.
This will give you the force of frication, then Work = Force * Distance moved.
2006-12-15 12:53:39 · answer #2 · answered by Dan C 1 · 0⤊ 0⤋
work done = f x d
so find the force of friction multiply by the distance the friction acts
2006-12-15 12:41:02 · answer #3 · answered by Matthew N 5 · 0⤊ 0⤋
W= F*d
W=Fd cos alpha
And alpha is 180o here, since the displacement and the force have different directions.
So cos alpha is -1
Ana
2006-12-15 12:44:04 · answer #4 · answered by Ilusion 4 · 0⤊ 0⤋