11.139 Dynamics 11.139 A monorail train starts from rest on a curve of radius 400 m andaccelerates at the constant rate a,. If the maximum total accelerationof the train must not exceed 1.5 m/s², determine (a) the shortestdistance in which the train can reach a speed of 72 km/h, (b) thecorresponding constant rate of acceleration a,.11.140 A motorist starts from rest at point A on a circular entrance rampwhen t = 0, increases the speed of her automobile at a constant rateand enters the highway at point B. Knowing that her speed continuesto increase at the same rate natil it reaches 100 km/h at point C,determine (2) the apend at point 8. (b) the magnitude of the totalacceleration who 720 G11.41 Race car A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instantshown, the speed of A is increasing at the rate of 10 m/s², and thespeed of B is decreasing at the rate of 6 m/s². For the position shown,determine (a) the velocity of B relative to A, (b) the acceleration ofB relative to A.200 km/h300 m50°240 km/h AEOFig. P11.14111.142 At a given instant in an airplane race, airplane A is flying horizontallyin a straight line, and its speed is being increased at the rate of 8 m/s².Airplane B is flying at the same altitude as airplane A and, as itrounds a pylon, is following a circular path of 300-m radius. Knowingthat at the given instant the speed of B is being decreased at the rateof 3 m/s², determine, for the positions shown, (a) the velocity of Brelative to A, (b) the acceleration of B relative to A.

Given: Radius of curve, ρ = 400m, v = 72km/h= 20 m/s

A monorail train starts from rest on a curve of radius 400 m and accelerates at the constant rate a,. If the maximum total acceleration of the train must not exceed 1.5 m/s², determine (a) the shortest distance in which the train can reach a speed of 72 km/h, (b) the corresponding constant rate of acceleration a,.

A monorail train starts from rest on a curve of radius 400 m and accelerates at the constant rate a,. If the maximum total acceleration of the train must not exceed 1.5 m/s², determine (a) the shortest distance in which the train can reach a speed of 72 km/h, (b) the corresponding constant rate of acceleration 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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