Rl-7. The van is traveling at 20 km/h when a coupling of
Chapter 16, Problem R1-7(choose chapter or problem)
Rl-7. The van is traveling at 20 km/h when a coupling of the trailer at A fails. If the trailer has a mass of 250 kg and coasts 45 m before coming to rest, determine the constant horizontal force F created by rolling friction which causes the trailer to stop.
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