12–149. The train passes point B with a speed of 20 m/swhich is decreasing at a, = - 0.5 m/s². Determine themagnitude of acceleration of the train at this point.12–150. The train passes point A with a speed of 30 m/sand begins to decrease its speed at a constant rate ofa,=- 0.25 m/s².Determine the magnitude of the accelerationof the train when it reaches point B, where sAB = 412 m.y = 200 e 1000Aх-400 m

As per the guidelines the first question will be answered. The given equation of the curve is…

Answered: 12–149. The train passes point B with a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A ball of radius 10mm can move along the frictionless slider of length L=141mm. It’s motion is affected by the device on surface B since it is experiencing attraction to that surface. At t=0, it is positioned at point A. Starting at rest, determine its velocity (m/s) as it comes in contact with surface B, if the ball’s acceleration is defined by a=c/(L-x)2 where c=50.4 m3/s

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