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If FA = 1.3 kN i - 4.3 kN j and FB = - 1.8 kN i - 1.8 kN j, what is the magnitude of F = 6FA + 8FB ? KN

Guest Sep 19, 2017
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If FA = 1.3 kN i - 4.3 kN j and FB = - 1.8 kN i - 1.8 kN j, what is the magnitude of F = 6FA + 8FB ?

 

6 < 1.3 kN i  ,  -4.3 kN j  >    +  8  < -1.8 kN i ,  - 1.8kN j >   =

 

< 7.8 kN i ,  -25.8 kN j  >   +  < 14.4 kN i  - 14.4kN j  >  =

 

< ( 7.8  + 14.4) kN i ,    ( -25.8 - 14.4) kN j  >   =

 

<  22.2 kN i  , -40.2 kN j   >

 

 

cool cool cool

CPhill  Sep 19, 2017

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