A car has 11-inch radius wheels and a torque/engine speedcurve is given by (with Me in ft-lb and nain revolutions persecond):M..7n. -0.08n;The car is travelling up a 3% grade with a gear reduction ratio of 2 to 1and a driveline slippage of 2%. The car is traveling at a speed whereits engine is generating maximum torque. If the car is on good, wetpavement with antilock brakes and a 95% braking efficiency, ignoringair resistance, what would be the theoretical stopping distance(distance travelled until a stop after the brakes are applied)?

Solution Given Data Grade= 3% Driveline slippage= 2% Braking Efficiency= 95 % Gear Reduction Ratio=…

Answered: A car has 11-inch radius wheels and a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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2. A ASHOK LEYLAND REQUIRED TO ACCELERATE AT A RATE OF 2 /SEC 2 IN THE FIRST GEAR FROM A SPEED OF 15 K.P.H THE GRADIENT IS + 3 PERCENTAGE AND THE ROAD HAS A BLACK TOPPED THE FRONTAL PROJECTION AREA OF THE CAR IS 3.0 M2.THE CAR TYRES HAVE A RADIUS OF 0.50 M. THE REAL AXLE GEAR RATIO IS 3.82 :1 AND THE FIRST GEAR RATIO IS 478 :1.CALCULATE THE ENGINE HORSEPOWER NEEDED AND THE SPEED OF ENGINE. ASSUMING F= 0.04, TRANSMISSION EFFICIENCY OF 0.80, TYRE DEFORMATION FACTOR = 0.85, RO=0.60
b. A valley (sag) curve is formed by a descending gradient of 1 in 50 which meets an ascending gradient of 1 in 40. Design the total length of the valley curve, if the design speed is 80 km/h. so as to fulfill both comfort condition and head light distance for night driving, after calculating SSD required. Assuming that the coefficient of friction between the tyres and the pavement is 0.30 and perception-reaction time is 2.5 seconds.
The stopping sight distance of a vehicle is 295 meters. Given that the acceleration of the vehicle is 3.45 m/s2 and travelling at a maximum grade of -3.5%, determine the following: a. Velocity of the vehicle in km/h b. Reaction distance in meters c. Braking distance in ft. Provide solution asap upvote guaranteed!
A driver (with a reaction time 0.60 sec) is driving down hill on a 5% grade at 60 km /hr .find minimum stopping sight distance required on highway section ?assume coefficient of friction =0.7 locked wheels?
A car traveling at 45 mph on a poor, wet pavement has a braking efficiency of 87%. The brakes were applied 100 feet before hitting an obstacle in the road. The road is uphill for 40 feet and then is level for the remainder of the way. The car had a maximum coefficient of road adhesion in the sloped portion of the poor, wet roadway and but as soon as it started going on the level portion its coefficient of road adhesion reduced to 0.3. Assuming that the car struck the obstacle at 30 mph, what was the grade of the hill? Assume practical stopping distance equation applies.
A car is traveling at a speed of 100 ft/s which accelerates 12 ft/s2. The perception reaction time for the driver is 2.40 s. If the maximum grade of the road is -3.7%, compute the following: a. Braking distance in meters b. Lag distance in meters
. The design speed on a road is 60 kmph. Assuming the driver reaction time of 2.5 seconds and coefficient of friction of pavement surface as 0.35, the required slopping distance for two-way traffic on a single lane road is
A cargo truck of J&T is to driven up a 5% grade at 120kph. The coefficient of road adhesion is 0.9 and its known that the braking efficiency is 85%. Determine the theoretical stopping distance if the driver has a reaction time of 0.7sec and the rolling resistance is 0.0137?
The radius of a highway curve is 120 m, and has an angle of 9.31° from the horizontal. The center of gravity of the car is located 0.80 m above the roadway and the distance between the two front wheels is 1.2 m. If the car has a total weight of 15 KN. a. Determine the normal acceleration and the velocity (in kph) of the car before overturning. b. Find the maximum velocity of the car could move along the curve so that there will be no outstanding pressure between the tires and the roadway. c. If the coefficient of kinetic friction is 0.60, what is the maximum velocity (in kph) of the car without sliding.
Problem 1: A.) Find the angle of banking for a highway curve of 90 meter radius designed to accommodate cars traveling at 160 kph if the coefficient of friction between the tires and the road is 0.60 B.) What is the rated speed of the curve?
Q- A single lane unidirectional highway has a design speed of 65kmph. The percept ion-brake-react ion time of drivers is 2.5 seconds and the average length of vehicles is 5m. The coefficient of longitudinal friction of the pavement is 0.4. the capacity of this road in terms of vehicles per hour per lane is..

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