How much force must an engine produce?

Question

If a car (mass=100tons) has a coefficient of friction=0.02, how much force must the engine produce if the locomotive is to accelerate at 1 m/s^2?

Answer 1

compute the frictional force

100tons*.02
the force required to accelerate the mass
F=m*a
100 Tons *1 m/s^2=F-100 tons*.02

convert the units and you have the answer
100*1.02=F

1.00000 Ton = 907.18474 Kilograms

90718*1.02
=92,532 N


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