a mass of 2.00kg is pushed up a 50 degree incline. if muse of k is 0.400 and a force of 50.0 N is applied parallel to the plane, what is the acceleration of the mass?
m*g = 2kg * 9.8N/kg = 19.6 N. = Wt. of
object being pushed.
Fp = 19.6*sin50 = 15.0 N. = Force
parallel to the incline.
Fn = 19.6*cos50 = 12.6 N. = Normal =
Force perpendicular to the incline.
Fk = u*Fn = 0.40 * 12.6 = 5.0 N. = Force
of kinetic friction.
a=(Fap-Fp-Fk)/m = (50-15-5)/2 = 15m/s^2.
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