Question

a 25 ton steam locomotive climbs up a mountain railroad with a 55ton train in tow. the wheels of the train cars are spinning freely, with negligible rolling resistance. the train has qn upslope acceleration of 0.25m/s^2. the railroad is inclined at an angle of 3degrees. calculate (a) the friction force between the locomotives wheels and rails and (b) the tension force in the coupling between the locomotive and the first car. note: 1ton=1000kg

Answer 1