- #1
Matt12345
- 5
- 0
Homework Statement
Body A weighs 110 N, and body B weighs 37 N. The coefficients of friction between A and the incline are μs = 0.56 and μk = 0.25. Angle θ is 40°. Let the positive direction of an x-axis be up the incline.
(a). Find the acceleration of A if A is initially at rest.
(... m/s^2) i
(b). Find the acceleration of A if A is moving up the incline.
(...m/s^2) i
(c). Find the acceleration of A if A is moving down the incline.
(...m/s^2) i
Homework Equations
F=ma
The Attempt at a Solution
So I am not really sure how to solve this problem at all. I have tried a few ways, none have come up with reasonable or correct answers.
I tried using...
FT = mA * g * sin(theta) - fk
where fk = mewk * FN
and setting FN = g * a
I then solved for a and came out with 134 but that was wrong and didn't make sense.
I have no idea what to do next. Can anyone help me out? That would be awsome.