guru wrote:Both matter. The effort you require to overcome the friction is equal to the weight multiplied by the coefficient of friction. So higher value of any one of them will need more effort.I did weigh the sled - 70 lbs by itself. I think, though, it's more the coefficient of friction that really matters.
Couldn't resist - occupational hazard of being a mechanical engineer
Yes yes yes Mr. Mechanical Engineer - at least you spared me the static vs kinetic coefficient lecture.


