On a runway of a decommissioned airport, a 2000 kg car travels at a constant speed of 100 km/h. At 100 km/h the air drag on the car is 1400 N. Assume that rolling friction is neglie(a) What is the force of static friction exerted on the car by the runway surface, and what is the minimum coefficient of static friction necessary for the car to sustain this speAs, min(b) The car continues to travel at 100 km/h, but now along a path with radius of curvature r. For what value of r will the angle between the static friction force vector and thvelocity vector equal 45.00?r =For what value of r will it equal 75.1°?r =What is the minimum coefficient of static friction necessary for the car to hold this last radius of curvature without skidding?As, min =eBook

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On a runwav of a decommissioned airport, a 2000 kg car travels at a constant speed of 100 km/h. At 100 km/h the air drag on the car is 1400 N. Assume that rolling friction is neg (a) What is the force of static friction exerted on the car by the runway surface, and what is the minimum coefficient of static friction necessary for the car to sustain this sp N Ps, min (b) The car continues to travel at 100 km/h, but now along a path with radius of curvature r. For what value of r will the angle between the static friction force vector and velocity vector equal 45.0°? r3D For what value of r will it equal 75.1°? m What is the minimum coefficient of static friction necessary for the car to hold this last radius of curvature without skidding? s, min = eBook

On a runwav of a decommissioned airport, a 2000 kg car travels at a constant speed of 100 km/h. At 100 km/h the air drag on the car is 1400 N. Assume that rolling friction is neg (a) What is the force of static friction exerted on the car by the runway surface, and what is the minimum coefficient of static friction necessary for the car to sustain this sp N Ps, min (b) The car continues to travel at 100 km/h, but now along a path with radius of curvature r. For what value of r will the angle between the static friction force vector and velocity vector equal 45.0°? r3D For what value of r will it equal 75.1°? m What is the minimum coefficient of static friction necessary for the car to hold this last radius of curvature without skidding? s, min = eBook

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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3.) Automotive engineers work very hard to improve the value of the drag coefficient for cars. Suppose you have a car with a mass of 3000. kg and an effective surface area of 4.00 m^2. The engine can generate a maximum force of 28,000. N. Let the coefficient of kinetic friction be 0.200, and the coefficient of static friction be 0.400. Air has a density of 1.21 kg/m^3. (back on earth) (3a) Draw a free-body diagram for your car, including both drag and friction, when the car is moving at its maximum velocity. (3b) If the maximum value of your car's velocity is 150.0 m/s, then what is the drag coefficient for the car? (3c) Suppose your engineers change the drag coefficient to 0.300 - what would be your maximum velocity then with the same force from your engine.
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1. A ship weighing 7200 tons has a KG of 5.20 m, a KB of 3.12 m and a KM of 5.35 m. In the voyage, has used 300 tons of fuel with Kg 0.6 m. If the free surface effect is neglected and assuming KM remains constant, calculate the angle of inclination of the ship.
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A car (m = 2000kg; Cd = 0.3; Ac = 2.5m ^ 2) travels on a flat track at a speed of 100 km / h. Air: 1.2 kg / m ^ 3; u = 1.8 x 10 ^ -5 Pa.s. a) Calculate the power required to overcome the drag. How much power does a 27 km / h head wind blow? b) What is the power required to climb a ramp, with a 5º slope, at 100 km / h? Consider the absence of wind and neglect rolling friction. Tip: Start by calculating the force the engine has to exert.
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