Recent content by perez1028

yay dumb algebra on my part! the coefficient of friction is no problem...surprisingly =) thanks to u who are spending their time helpin so much, personaly i get most of it i just need a few points in the right direction!

yea thanks that is the basic step for the formula with that i was able to get : m*a = F - Ff F(75) - Ff = m*a(.5) F(81) - Ff = m*a(.75) so from there: (using Ff) m*a(.5) + F(75) = F(81) + m*a(.75) that really dosn't seem to fit a lot of the formulas make sense to me but i just...

well not really sure what your saying by that but with uk*F = m i can get the mass but I am really not sure how to use the 75N to first get uk or the mass... that's what I am missing

Homework Statement Ben pushes a box along a floor against a constant force of friction. When Ben pushes with a horizontal force of 75N the acceleration of the box is 0.5 m/s/s; when he increases the force to 81N the acceleration is 0.75m/s/s. Homework Equations Find the mass of the...