A truck is traveling at a speed of 60 km/h on a road, which has a curve with R=200 m and a grade of +7%. The weight of the truck is 7000 kg and its cross-sectional area is 5 m2. If the truck is traveling on a straight and level section of the road, and if air resistance is neglected, then the horsepower needed is: O a. 565 hp b. 127 hp O c. 75 hp O d. 617 hp

A truck is traveling at a speed of 60 km/h on a road, which has a curve with R=200 m and a grade of +7%. The weight of the truck is 7000 kg and its cross-sectional area is 5 m2. If the truck is traveling on a straight and level section of the road, and if air resistance is neglected, then the horsepower needed is: O a. 565 hp b. 127 hp O c. 75 hp O d. 617 hp

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Question An engineer has designed a road with a curve of radius 12 m. The material of the road offers a maximum coefficient of friction of 0.3. What should be the maximum permissible speed limit on this road? C 0 7 m/s 8 m/s 6 m/s 5 m/s
The car is moving with a speed vo = 46 mi/hr up the 8-percent grade, and the driver applies the brakes at point A, causing all wheels to skid. The coefficient of kinetic friction for the rain-slicked road is lk = 0.61. Determine the stopping distance sĄB. Repeat your calculations for the case when the car is moving downhill from B to A. в 8 100 Answers: Uphill: SAB = ft Downhill: SBA i ft
X Incorrect The 3620-lb car is traveling at 25 mi/hr when the driver applies the brakes, and the car continues to move along the circular path. What is the maximum deceleration possible (a, is negative if the speed is decreasing) if the tires are limited to a total horizontal friction force of 2290 Ib? 105 ft Answer: a = -8.940 ft/sec2
35. Determine the minimum speed of a car at the point the brakes are immediately applied to avoid a collision based upon a yaw mark chord measuring 70.4 feet and a middle ordinate measuring 6 feet. The drag factor C² M of the road surface is 1.4 (Use-Mand S=√15fr ) A. 34.2 MPH B. 9.9 MPH C. 16.4 MPH D. 47.2 MPH
Car B is towing car A at a constant speed of 10 m/s on an uphill grade when the brakes of car A are fully applied causing all four wheels to skid. The driver of car B does not change the throttle setting or change gears. The masses of the cars A and B are 1400 kg and 1200 kg, respectively, and the coefficient of kinetic friction is 0.8. Neglecting air resistance and rolling resistance, determine (a) 5m 10 m/s 10 m/s the distance traveled by the cars before they come to a stop, (b) the tension in the cable.
what is the coeficient of friction between the raod and the tires of the car is 0.60. the car weighs 3220 lb. it is rounding the curve at maximum seed. what is the value of the friction force in lb acting under a) the outer wheel b) the inner wheel.
1. A driver is travelling at 50 mph is 80 m from a wall ahead, if the driver applies the brake immediately at t-2 secs, and begins slowing down at 10m/s^2. a. Find the distance from the stopping point to the wall. b. Determine the braking time or the time during deceleration. c. Determine the average skid resistance, assuming brake efficiency of 70%.
Estimate the horsepower required to accelerate a 2,500-lb vehicle traveling 30 mph up a 5% grade at the rate of 6 ft/sec². The vehicle has a frontal cross-sectional area of 20 ft2. The roadway has a straight alignment and a badly broken and patched asphalt surface Assume the drag coefficient = 0.3 and a rolling resistance =34 Use the following: (a) Inertia resistance, F, =? (compute) (b) Grade resistance, F =? (compute) (c) Rolling resistance, F, = 34 lb (d) Curve resistance, F = 0 (e) Air resistance; Use the formula :F= 0.0006AV² (f) Horsepower
A 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2.?
A 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2. Show your step by step solutions.
A 2500-lb passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius = 850 ft. If the vehicle was originally traveling at 55 mi/h, determine (a) the additional horsepower on the curve the vehicle must produce to maintain the original speed, (b) the total resistance force on the vehicle as it traverses the horizontal curve, and (c) the total horsepower. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 30 ft2. Show your solutions and answers.
2/100 The driver of the truck has an acceleration of 0.4g as the truck passes over the top A of the hump in the road at constant speed. The radius of curvature of the road at the top of the hump is 98 m, and the center of mass G of the driver (considered a parti- cle) is 2 m above the road. Calculate the speed u of the truck. A 2 m Problem 2/100