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25 February, 01:47

A farm tractor tows a 4080 kg trailer up a 14.5° incline at a steady speed of 3.0 m/s. what force does the tractor exert on the trailer? (ignore friction.)

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  1. 25 February, 03:06
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    Force due to gravity = 4080 x 9.81 = 40,025 N

    Force of trailer parallel to slope = 40025 sin 14.5 = 10021 N (resolve horizontally)

    I used the acceleration of gravity as 9.81 m/s. If they want you to use 10 m/s, just switch it with the 9.81 in the first equation. Ignore the speed of the trailer. That is just to throw you off.
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