Use the values RE = 6370 km = 3960 mi for the radius of the earth
A “cog” engine hauls three cars of sightseers to a mountaintop in Bavaria. The mass of each car, including its passengers is 10,000 kg, and the friction forces exerted by the wheels of the cars are negligible. Determine the forces in the couplings 1, 2, and 3 if (a) the engine is moving at constant velocity and (b) the engine is accelerating up the mountain at 1.2 m/s2.
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