- #1
462chevelle
Gold Member
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Homework Statement
A 3 kg block slides down a 30 degree inclined plane with constant acceleration of 0.5 m/s2. The block starts from rest at the top. The length of the incline is 2 m.
Homework Equations
Vf^2=Vi^2 +2ad velocity is 1.414
Fg=3 x 9.8=29.4
Fn= cos(30) (9.8 x 3) = 25.5
f//=sin (30) (9.8 x 3) =14.7
f=ma = 4.242=3 x 1.414
Ff= F//-f = 10.458=14.7-4.242
Ff=mu x (Fg) = 10.458= mu x 29.4 = .356
The Attempt at a Solution
Ff=mu x (Fg) = 10.458= mu x 29.4 = .356
this is incorrect. I feel like I am missing a simple step. I just can't figure out where I am messing up. any direction here? thanks