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A 4000 kg truck is parked on a 15˚ slope. How big is the friction force on the truck? The coefficient of static friction between the tires and the road is 0.90.
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The answer is 10000 N
|dw:1441558783042:dw|First job is to determine the normal force, \(F_N\). Can you do that?
@ospreytriple yes, it is 39200 N
Sorry, that's not it. You must resolve \(F_g\) into its components perpendicular and parallel to the incline.|dw:1441559811875:dw|The normal force is equal in magnitude and opposite in direction to \(F_{g,x'}\).
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