Hi. I have a test on Monday. I keep getting two questionswrong on a practice tes

Question

Hi. I have a test on Monday. I keep getting two questionswrong on a practice test he gave. I dont get it, adding vectors iseasy can someone please help! The following Vectors act on anobject: 61.0 N @ 25.0 degrees 138.0 N @ 220.4 Degrees 44.00 N @ 159.6 degrees. What is the resultant force vector? Hi. I have a test on Monday. I keep getting two questionswrong on a practice test he gave. I dont get it, adding vectors iseasy can someone please help! The following Vectors act on anobject: 61.0 N @ 25.0 degrees 138.0 N @ 220.4 Degrees 44.00 N @ 159.6 degrees. What is the resultant force vector?

Explanation / Answer

Given F1 = 61 cos 25 i+ 61 sin 25 j

                = 55.28i+25.77 j

           F2=138 cos 220.4i+138 sin 220.4 j

               = -105.09i -89.44 j

           F3= 44 cos 159.6i + 44 sin 159.6 j

               = -41.24i +15.33 j

Resultant force vector F = F1 +F2 + F3

                                       = -91.05 i-48.33 j

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