Is that possible? If so, PLEASE tell me how.
In other words, how do you find the coefficient of friction in a certain situation (provided that you do not know the force of friction, only the mass)???
Any help is appreciated... ASAP
2006-12-11 16:45:34 · 5 answers · asked by abc123 1 in Science & Mathematics ➔ Physics
You would need for information than simply mass. You can calculate force of friction if you know how much force you are applying and what the actually accerlation is.
Remember:
equation 1) force = mass x acceleration
equation 2) accerlation = force/mass.
find your forces applied and use equation 2) to find your expected acceleration.
Measure your actuall acceleration, and subtract from the expected.
use the difference of acceleration in equation 1) to find the force of friction.
2006-12-11 16:55:36 · answer #1 · answered by borscht 6 · 0⤊ 0⤋
F=uN. If you know the Normal Force and the force needed to slide the object (F) along the surface, you can DETERMINE the coefficient of friction (u). The normal force is the force perpendicular to the surfaces in motion. If the block is on a horizontal surface, the Normal force = mg, mass times gravity.
If I press on a block that weighs 10 pounds, and I push on it horizontally on the ground with 10 lbs and it moves along the ground with no acceleration, the coefficient of dynamic friction would be 1. F/N=u. 10/10 = 1. The coefficient of static friction would be the peak force applied to get the block moving from a standstill. Static is usally always larger than dynamic: once the object is moving it tends to resist the force a bit less when the object is moving.
2006-12-11 17:02:53 · answer #2 · answered by DellXPSBuyer 5 · 1⤊ 0⤋
The formula for the stress of friction is stress generic*u=stress Friction. the position stress generic, if the article isn't on an incline, the stress generic is purely M*g (g=9.8 m/s^2), (when you're on an incline it truly is M*g*cos(theta), the position theta is the perspective of incline with appreciate to the horizontal). you're given the frictional stress, so all you need to do is sparkling up the equation for u.
2016-11-25 22:12:01 · answer #3 · answered by stockbridge 4 · 0⤊ 0⤋
do you know the acceleration? If so, just manipulate newtons 2nd.
Or maybe you can use delta E (thermal)= friction force * distance traveled
2006-12-11 16:55:32 · answer #4 · answered by dopplerjeff5000 2 · 0⤊ 0⤋
im not very sure but i think F = ma
so if u know the mass and the acceleration ,u can find out the force F
2006-12-11 16:55:22 · answer #5 · answered by nocarbs 3 · 0⤊ 0⤋