Engineering Mechanics

what superelevation is required on a 40 railway curve for zero resultant flange pressure on a car running at a speed of 64kph?

C. What is the resultant flange pressure on a 450KN car moving around this curve at a speed of 96KPH.
Gage G of the track is 1.50m. (A 40 curve is one whose chord is 30.5m)

turbine is rotating at a constant speed of 2,400rev/min. at what constant rate, in radians/s2, must its motion be retarted to bring it to rest;

a. In 20 mins.
b. In 300 revolutions

28. A train, weighing 9000KN, is pulled up a 2% grade. Train resistance is constant at 6N/KN. The speed of the train is increased 8m/s to 16m/s in a distance of 800m. Find the maximum horsepower developed by the locomotive.

What work is done on a level track in bringing the velocity of a train weighing 200metric tons from zero to 45 kph, if the frictional resistance at any velocity is 45N/ton, and if the change in speed is accomplished in length of 1000m? (Ans. 26780.95 KN/m)

C. If the track were a 1% upgrade, what would be the additional work to be done?

A 400N weight starts down a 300 incline with an initial velocity of 4m/s. What is the velocity of the weight after 10 seconds if F=0.20 for the incline?

The weather vane of a ship points southeast when the ship is moving east at the rate of 25 km/hr. If the wind velocity is 5 km/hr., from what direction is it blowing?

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