2/39 On its takeoff roll, the airplane starts from rest and accelerates according to a = ao-ku², where a, is the con- stant acceleration resulting from the engine thrust and -ku² is the acceleration due to aerodynamic drag. If ao = 2 m/s², k = 0.00004 m¹, and vis in meters per sec- ond, determine the design length of runway required for the airplane to reach the takeoff speed of 250 km/h if the drag term is (a) excluded and (b) included. Vo = 0 v = 250 km/h

2/39 On its takeoff roll, the airplane starts from rest and accelerates according to a = ao-ku², where a, is the con- stant acceleration resulting from the engine thrust and -ku² is the acceleration due to aerodynamic drag. If ao = 2 m/s², k = 0.00004 m¹, and vis in meters per sec- ond, determine the design length of runway required for the airplane to reach the takeoff speed of 250 km/h if the drag term is (a) excluded and (b) included. Vo = 0 v = 250 km/h

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.4P: A compact car travels 30 mi on one gallon of gas. Determine the gas mileage of the car in km/L. Note...

See similar textbooks

Similar questions

A compact car travels 30 mi on one gallon of gas. Determine the gas mileage of the car in km/L. Note that 1gal=3.785L.
3. An engineer is designing the runway for an airport. Of the planes that will use theairport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed forthis plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum allowed length for the runway?
Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 6 in./sec, which is decreasing at the rate of 3 in./secevery second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 12 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. 2.7 B 3.6' PA 37° Part 1 Correct Determine the indicated terms used in the velocity and acceleration formulas. 2.7 B 3.6' 37° Answers: r- 75.6 in. 37 トー 6 in./sec 9 - 0.21 rad/s Fー -3 in./sec? 0 - rad/s?
Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 6 in./sec, which is decreasing at the rate of 3 in./secevery second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 12 deg/sec. Determine the velocity vand acceleration a of the clevis attachment at B. B 2.7 3.6' 370 Part 1 Correct Determine the indicated terms used in the velocity and acceleration formulas. B 2.7' 3.6' 37° Answers: r- 75.6 in. 37 in./sec 9 - 0.21 rad/s -3 in/sec? 0 - rad/s?
1- Find the velocity i and the position x as functions of the time t for a particle of mass m, which starts from rest at x =0 and t =0, subject to the following force functions: (a) F, = F.+ ct (b) Fx = F, sin ct (c) Fx = F, ed Where F, andc are positive constants.
1- Find the velocity x and the position x as functions of the time t for a particle of mass m, which starts from rest at x =0 and t=0, subject to the following force functions: (a) F, = F. + ct (b) F = F, sin ct (c) F, = F, ed Where F, and c are positive constants.
Q1. A driver enters a curved car at 72 km/h, slows down, causing the speed to drop at a steady rate of 4.5 km/h every second. If the radius of curvature is 16.7 m. Find the acceleration of the car after 4 seconds from the driver starting to slow down.
A motorcycle and rider have a combined mass of 350kg. The vehicle’s velocity is 100 km/hr. The rider is to go up a hill incline of 10 meters. The wheels each have a mass of 20 kg and a diameter of 500mm. The wheel design consists of 6 spokes with a mass of 0.5 kg for each spoke. 2) Indicate the vehicle’s velocity at each meter through the climb.
A block is pulled at constant speed along a rough level surface by a ropc that makes an angle of 30° with respect to the horizontal. The applied force along the rope is P . The force of kinetic friction between the block and the surface is 20 N. 30° Which one of the following expressions gives the magnitude of the force P in SI units? O 20(sin 30°) O 10(cos 30) O tan 30 O 20/(cos 30) O 30/(sin 30°) O O O O O
A helicopter with a mass of 10,000 kg takes off straight up at t=0. The thrust of the engine is defined given as a function of time: FT= 95 0.18t- (kN). Where t is in units of seconds. How fast is it rising and what is its elevation at t=4s?
Q1 A balloon is rising vertically above a level, straight road at a constant rate of 2 ft sec. Just when the balloon is 60 ft above the ground, a bicycle moving at a constant rate of 17 ft sec passes under it. How fast is the distance s(t) between the bicycle and balloon increasing 3 sec later?
A tourist driving in the Hijaz mountainous area of Saudi Arabia using an old Chevy car. His car's top speed is 100 kph with an acceleration of 4 f/sec", a wt. of 3000 Ib. and a cross-sectional area of 4t x7t. The roadway curves' radii range from 800- 2000 ft with a posted max speed of 80 kph. The straight road sections have a posted max speed of 20p The road grades range from (10%to +10%. What is the min engine power required to travel on the curves at max possible speed?