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4) If the end of the cable at A is pulled down with a speed of 2 m/s, determine the speed at which block B rises. De UA 2 m/s

4) If the end of the cable at A is pulled down with a speed of 2 m/s, determine the speed at which block B rises. De UA 2 m/s

Elements Of Electromagnetics
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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DEPENDENT MOTION 4) If the end of the cable at A is pulled down with a speed of 2 m/s, determine the speed at which block B rises. UA 2 m/s
Transcribed Image Text:DEPENDENT MOTION 4) If the end of the cable at A is pulled down with a speed of 2 m/s, determine the speed at which block B rises. UA 2 m/s
Expert Solution
Step 1

Equation for the length of the string is

3sB+sA=l

Here sB and sA are the displacement of the B and A that change with time and l is the constant

Differentiate with respect to the time

3vB+vA=03vB+2 m/s=0vB=-23=-0.667 m/s

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