What is the magnitude of the force must each engine exert

Assignment Help Physics

Reference no: EM13983508

A freight train consists of two 8.3 A????1 10⁴ kg engines and 45 cars with average masses of 5.95 x 10⁴kg each.

m = 8.3 x 10⁴ kg
m₂ = 5.95 x 10⁴ kg
f = 7.6 x 10⁵ N

1) What is the magnitude of the force must each engine exert backward on the track to accelerate the train at a rate of 5.00 x 10^-12 m/s² if the force of friction is 7.6 x 10⁵ N, assuming the engines exert identical forces? This is not a large frictional force for such a massive system. Rolling friction for trains is small, and consequently trains are very energy-efficient transportation systems.

2) What is the force in the coupling between the 37^th and 38^th cars (this is the force each exerts on the other), assuming all cars have the same mass and that friction is evenly distributed among all of the cars and engines?

Reference no: EM13983508

Questions Cloud

What is the rms current to the inductor : What is the inductive reactance? What is the rms current to the inductor? If both the inductance and the frequency were doubled, what would be the rms current

Find the values for the acceleration : What is the acceleration at an altitude equal to half the planetary radius for Mars and Saturn.

What is the mechanical energy for this system : As shown in the diagram, a block with a mass of m slides on a frictionless, horizontal surface with a constant velocity of vi. It then collides with a spring that has a spring constant of k. The block fully compresses the spring, comes to rest bri..

What is the frequency of the lowest playable note : If the player's hand keeps the large end open, what is the frequency of the lowest playable note? If the player now closes the large end with his hand, what is the frequency of the lowest playable note?

What is the magnitude of the force must each engine exert : What is the magnitude of the force must each engine exert backward on the track to accelerate the train at a rate of 5.00 x 10-12 m/s2 if the force of friction is 7.6 x 105 N, assuming the engines exert identical forces?

Purpose and goals of a mobile self-service : Describe the following: Purpose and goals of a mobile self-service. Target segment (audience). Audience needs and wants

What is the car kinetic energy at point a : Conservation of Energy A roller-coaster car with a mass of m moves along a smooth track as diagrammed in the graph below. The car leaves point A with no initial velocity and travels to other points along the track. The zero energy level is taken a..

Wrong in a catastrophic event : Research and discuss the top three areas of concern which can go wrong in a catastrophic event. Explain why you chose these three areas. Describe the consequence that each of these problems has on a disaster recovery effort.

Find power of motor that is needed to maintain temperature : Since the heat insulation is not perfect, some heat flows into the freezer at a rate of 60 W. Find the power of the motor that is needed to maintain the temperature in the freezer.

User Account

All Pages