A car m = 200 tons makes the journey shown in the figure, if it moves with an initial speed of 150,000 m/s and the maximum height of the path is 15,000 m and the coefficient of friction is 0.4. Find the work of all the forces that intervene at point a, point b and point c, kinetic energy a, b, c, potential energy a, b, c and the power of the car developed along the trajectory • Steps draw the free body diagram, the force diagram and use the appropriate equations to find Kinetic energy at points A, B and C Power energy at points A, B and C Power at points A, B and C ● ●

A car m = 200 tons makes the journey shown in the figure, if it moves with an initial speed of 150,000 m/s and the maximum height of the path is 15,000 m and the coefficient of friction is 0.4. Find the work of all the forces that intervene at point a, point b and point c, kinetic energy a, b, c, potential energy a, b, c and the power of the car developed along the trajectory • Steps draw the free body diagram, the force diagram and use the appropriate equations to find Kinetic energy at points A, B and C Power energy at points A, B and C Power at points A, B and C ● ●

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

See similar textbooks

Similar questions

In unloading a grain from a hold of a ship, an elevator lifts the grain through a distance of 12 m. Grain is discharged at the top of the elevator at a rate of 2.0 kg each second, and the discharged speed of each grain particle is 3 m/s Find the minimum-horsepower motor that can elevate the grain in this way if it is 60% efficient.
If the coefficient of kinetic friction between the block and the table in the figure is 0.56, and m1= 0.150 kg and m2= 0.250 kg A) What value of m3 would keep the system in motion with constant speed?B) If m3= 0.100kg, what would be the magnitude of the acceleration of the system ?
A belt conveyor is required to deliver crushed limestone having a bulk density of 50 lb/ft3 at the rate of 100 tons/hr. The conveyor is to be 100 ft. between pulleys with a rise of 25 ft. with a belt speed of 100 ft/min. Determine the ff: a. The minimum width of belt b. The horsepower required to drive the motor if its efficiency is 90%
A 0.525-oz model rocket is launched vertically from rest at time t = 0 with a constant thrust of 0.9 lb for 0.3 s and no thrust for t > 0.3 s. Neglect air resistance and the decrease in mass of the rocket. Find the time required to reach the maximum height
1) Jonny pulls his sister Jane (weight 28 lbs), who is sitting in a wagon, up an incline ramp (θ = 17°) with a steady speed. If the coefficient of kinetic friction is 0.18, the wagon has a mass of 14 kg, and the length of the ramp is 2.4 m, find: the work done by the frictional force. the work done by the gravitational force.
Please include the figure, fbd and formula. An empty freight car with a mass of 10,000 kg rolls at 5 m/s along a level track and collides with a loaded car with a mass of 20,000 kg, standing at rest with brakes released. Friction can be neglected. If the cars couple together, find their speed after the collision. a. Find the decrease in kinetic energy as a result of the collision. b. With what speed should the loaded car be rolling towards the empty car for both to be brought to rest by the collision?
A vehicle accelerates a glider of 125 kg from rest to a speed of 50 km/hr. Make calculations for the work done on the glider by the vehicle. What change would occur in the kinetic energy of the glider if subsequently its velocity reduces to 20 km/hr on the application of brakes.
A 2-kg car initially moving at 6 m/s at a height of 4 m encounters a hill of height 5 m, as shown in Figure. At a later point there is a horizontal spring (with a spring constant k=150 N/m) at a height of 2 m. (a) Does the car reach the spring? (Hint: Compare the initial total mechanical energy of the car with its potential energy at hill of height 5 m) (b) If so, what is the maximum compression in the spring? Ignore frictional losses and the rotational energy of the wheels.g=9.8 m/s2
Find the displacement’ and velocity ‘u with which a 95 kg container placed at height of 543 m falls when pushed from top and reaches the ground in 4574
he fan shown in Figure 6 blows air at the rate of 5700ft3/min. The fan weighs 35 lb and has its center ofgravity at G. The specific weight of air is γ = 0.076lb/ft3. Assume that the upstream velocity of air is zero. Determine:(a) The force exerted by the fan on the air.(b) The pressure rise across the fan blades in psi.(c) The power required by the fan. (1 horsepower = 550 lb-ft/s)(d) The smallest diameter d of the base so that the fan won’t tip over.
A spring with spring constant k=70 kN/m is used to stop the box of mass m with initial velocity V1= 7 m/s. The spring is initially compressed 100 mm with cables. Since the box produces a maximum compression x=60 mm in the spring. m= 60 kg. s=750mm(a) Find the kinetic coefficient of friction between the surface and the box.(b) Find the velocity of the box as it moves back from its original position.
A train of mass 200 tonnes moves on a level track having a track resistance of 85 Newtons per tonne. Find the maximum speed of the engine, when the power developed is 320 kW.