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Physics 19 Online
OpenStudy (anonymous):

A 4000kg truck is parked on a 15.0∘ slope. How big is the friction force on the truck?

OpenStudy (anonymous):

|dw:1382070090225:dw| rotate axis, so our math is easier then looks like this... |dw:1382070259302:dw|

OpenStudy (anonymous):

sum the forces in the x-direction and we get Friction force = sin(15) * mg

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