A train has a 500,000 kg engine towing 20 cars on a level track. Each car has a mass of 100,000 kg. The train is speeding up at a rate of 0.1 m/sec2. The wheels of the engine do not skid. What is the minimum coefficient of static friction between the engine wheels and the track for this to happen?
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A train has a 500,000 kg engine towing 20 cars on a level track. Each car has a mass of 100,000 kg. The train is speeding up at a rate of 0.1 m/sec2. The wheels of the engine do not skid.
What is the minimum coefficient of static friction between the engine wheels and the track for this to happen?
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- In the figure, two blocks are connected over a pulley. The mass of block A is 8.50 kg and the coefficient of kinetic friction between A and the incline is 0.260. Angle e of the incline is 40.0°. Block A slides down the incline at constant speed. What is the mass of block B? Frictionless, massless pulley Number i UnitsThe 0.16 kg particle has a speed v = 11.9m / s as it passes the position shown. The coefficient of kinetic friction between the particle and the vertical plane track is mu*k = 0.24 Determine the magnitude of the total force exerted by the track on the particle What is the change in speed v (positive if speeds up, negative is slows down) of the particle?7. A car is right on the verge of sliding as it speeds around a level circular track. The radius of the circular track is 21 m, and the coefficient of static friction between the car's tires and the track is 0.7, while the coefficient of kinetic friction is 0.56. What is the speed of the car?
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- In the figure, two blocks are connected over a pulley. The mass of block A is 6.50 kg and the coefficient of kinetic friction between A and the incline is 0.160. Angle 0 of the incline is 39.0°. Block A slides down the incline at constant speed. What is the mass of block B? Frictionless, massless pulley: B Number UnitsA 500 N block is being pushed along a frictionless horizontal surface by a force of 150 N at 40° to the horizontal. What is the normal force from the surface on the object? A) 96 N B) 150 N C) 404 N D) 500 N E) 596 N 150 N 500 N 40.0°35. A block begins to slide from a ramp with a height of h = 150m for the first time, without friction, and climbs an opposite inclined plane with an angle of inclination of 45o. Since the block rises 100m in this plane, what is the kinetic coefficient of friction between the block and inclined plane? A) 0.42 B) 0.38 C) 0.42 D) 0.37 E) 0.5
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