Given: A= 8.0 N at 35 degrees and vector B= 15.0 N at 120degrees. Caclulate the

Question

Given: A= 8.0 N at 35 degrees and vector B= 15.0 N at 120degrees. Caclulate the Resultants R1= A+B and R2 = A-Banalytically. Now determine R1 and R2 using graphical method. I think I got the frist Resultant correct so I will be usingthis to check it out but I am completely lost on both substractingvectors and resultants so LIFESAVER =] Given: A= 8.0 N at 35 degrees and vector B= 15.0 N at 120degrees. Caclulate the Resultants R1= A+B and R2 = A-Banalytically. Now determine R1 and R2 using graphical method. I think I got the frist Resultant correct so I will be usingthis to check it out but I am completely lost on both substractingvectors and resultants so LIFESAVER =]

Explanation / Answer

  x -comnponent   of A    is Ax = 8 ( cos 35o )                                                       = 6.553 y -component of    A is        Ay  = 8 ( sin 35 o )                                                    = 4.588                                 A = i Ax + j Ay                                       =(6.553) i + ( 4.588) j     x -comnponent  of  B   is   Bx = 15 ( cos120o )                                                    = - 7.5 y -   component of   B    is   By = 15 (sin 120o )                                                    = 12.99                               B = i Bx + j By                                   = (-7.5 ) i + ( 12.99)j    resultants R 1 = A   + B                           =     (-0.95)   i +  (17.578)j              R 2    =   A  -   B                        =   ( 14.053 )  i + (  8.402) j                                   

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