A tractor of mass 2000 kg pulls a trailer of mass 1500 kg. The total frictional force is 3000 N and the acceleration of the tractor and trailer is 3 ms-2. Calculate: a. The force exerted on the tractor by the tow-bar when the acceleration is 3 ms-2. b. The force exerted when the tractor and trailer are moving at a constant speed of 4 m/s.
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Explanation:
a) 6000 N
not sure about the second answer.
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