So I have force of gravity = m (9.81m/s^2)
Force upwards = m(9.81m/s^2)sin30
Force upwards = m(4.905)
Normal force = Fg - Fup
Normal force = m(9.81m/s^2) - m(4.905)
Normal force = m(4.905)
then I lose myself - I'm not sure if I'm on the track that you mean...
"A box slides down a 30.0 degree ramp with an aceleration of 1.20m/s^2. Determine the coefficient of kinetic friction between the box and the ramp."
I know that the coefficient of kinetic friction is found by kinetic friction / normal force, but the only problems I've delt with in the past...