Thursday, July 30, 2009

What is the magnitude of the resultant??? vector Physics help please?

There are three vectors: A,B,C. Vector A is 70.0 units East creating an angle of 28.0 degrees. Vector B is 40.0 units West creating an angle of 56.0 degrees. Vector C is 46.8 units South. Their magnitudes are given in arbitrary units. Determine the sum of the three vectors.





a) Give the resultant in terms of components.


Rx = .....


Ry = .....





(b) What is the magnitude of the resultant?





What is the resultant's angle above the +x axis?


.......°

What is the magnitude of the resultant??? vector Physics help please?
the answer is





Rx= Acosx +Bcosy+Ccosz : where x, y, and z are the angles corresponding to vectors A,B,C(z=90 degrees) and A,B,C is the magnitude of the vectors


Ry=Asinx+Bsiny+Csinz: same x,y, z as above





the magnitude is the square root of Rx^2 +Ry^2





the angle is tan^-1(Ry/Rx)


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