Friction encountered = 0.1(mg cos 25) = 0.888N.
Force down the angle due to gravity = (mg sin 25) = 4.142N.
Net accelerating force = (4.142 - 0.888) = 3.254N.
Acceleration = (f/m) = 3.254/1 = 3.254m/sec^2.
A = g(sin(25) - k cos(25)) = 9.8*(sin(radians(25)) - .1*cos(radians(25))) = 3.26 m/s^2. ANS.
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Friction encountered = 0.1(mg cos 25) = 0.888N.
Force down the angle due to gravity = (mg sin 25) = 4.142N.
Net accelerating force = (4.142 - 0.888) = 3.254N.
Acceleration = (f/m) = 3.254/1 = 3.254m/sec^2.
A = g(sin(25) - k cos(25)) = 9.8*(sin(radians(25)) - .1*cos(radians(25))) = 3.26 m/s^2. ANS.