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A farm tractor tows a 3400-kg trailer up a 20 ∘ incline with a steady speed...

A farm tractor tows a 3400-kg trailer up a 20 ∘ incline with a steady speed of 3.0 m/s. hat force does the tractor exert on the trailer? (Ignore friction.) Assume that positive x axis is directed toward the direction of motion. Express your answer using two significant figures.

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