physics problem?

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a horizontal force of 198 N is exerted on a 20 kg wooden box in order to slide it up a 30 degree incline. the coefficient of kinetic friction is 0.2. Find the force of kinetic friction. Find the acceleration of the system.

2007-11-25 05:09:48 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Physics

1 answers

The force of friction is
20*9.8*cos(30)*0.2+198*sin(30)

133 N

198*cos(30)-133=20*a
a=1.93

j

2007-11-25 07:00:09 · answer #1 · answered by odu83 7 · 0⤊ 0⤋