i am a biology student and this is my first semester taking physic.can anyone explain to me about this topic motion and force?so,I can do better in next physic experiment
2007-02-15 04:03:33 · 3 answers · asked by siti0012 1 in Science & Mathematics ➔ Physics
The coefficient of kinetic friction is a ratio of forces.
mu=Ff/Fn where Fn is the normal force, and Ff is the frictional force.
If you know the mass of an object you can determine its normal force and when you drag something you can use a force gauge to measure the frictional force. The reason you have to move at a constant speed is so that your frictional force is constant so that you can calculate a good value. Hope this helps!
2007-02-15 04:32:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If the velocity changes, then so does the friction.
2007-02-15 05:01:31 · answer #2 · answered by gebobs 6 · 0⤊ 0⤋
becuz you are learning about constant velocity not acceleration
2007-02-15 04:19:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋