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i got the solution, but I don't understand what is the number come from. W x (W x r ) ? 2W x v rel  ?

i got the solution, but I don't understand what is the number come from. W x (W x r ) ? 2W x v rel  ?

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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i got the solution, but I don't understand what is the number come from.

W x (W x r ) ?

2W x v rel  ?

 

The air transport B is flying with a constant speed of 480 mi/hr in a horizontal arc of 9-mi radius. When B reaches the position shown, aircraft A, flying southwest at a constant speed of 360 mi/hr, crosses the radial line from B to the center of curvature C of its path. Write the vector expression, using the x-y axes attached to B, for the acceleration of A as measured by an observer in and turning with B. B UB -5 mi- 9 mi 45° JUA A to solution for Prob. 5/175 2A=A+wxr+wx (wxr) +2wxgrol+arel 용 7042 where NIT 9A=0,98= wx(wxr) = -0.01481kx(-0.01481kx 26,400) = -5.79 He/sec² 2wxurl=2(-0.1481 k)*(-3731-686j)=11.05)-23.0 ft/sec 4x5280 =10.43 ft/sec² C Brel 0-10.431-0+5.79i-11.05j+20.3i-15.69 -11.05 ft/sec² Arel = 19.19 ft/sec
Transcribed Image Text:The air transport B is flying with a constant speed of 480 mi/hr in a horizontal arc of 9-mi radius. When B reaches the position shown, aircraft A, flying southwest at a constant speed of 360 mi/hr, crosses the radial line from B to the center of curvature C of its path. Write the vector expression, using the x-y axes attached to B, for the acceleration of A as measured by an observer in and turning with B. B UB -5 mi- 9 mi 45° JUA A to solution for Prob. 5/175 2A=A+wxr+wx (wxr) +2wxgrol+arel 용 7042 where NIT 9A=0,98= wx(wxr) = -0.01481kx(-0.01481kx 26,400) = -5.79 He/sec² 2wxurl=2(-0.1481 k)*(-3731-686j)=11.05)-23.0 ft/sec 4x5280 =10.43 ft/sec² C Brel 0-10.431-0+5.79i-11.05j+20.3i-15.69 -11.05 ft/sec² Arel = 19.19 ft/sec
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