
#1
Sep2907, 11:57 AM

P: 173

Hi.
Could someone please show me how to draw the diagram for the following question as I am really stuck. I would really appreciate any help. I have already drawn a diagram but must have labelled the forces incorrectly as my subsequent answers do not match the ones in the back of the textbook. Forces P, Q, R and S act on a particle at O in the plane of the coordinate axes Ox, Oy, making angles p, q, r, s respectively with Ox, each angle being measured in the anticlockwise sense. Find the magnitude of the resultant and the angle it makes with Ox when: (a) P = 2N, Q = 3N, R = 4N, S = 5N p = 0, q = 40, r = 100, s = 150 Thank you. Cathy 



#2
Sep2907, 12:56 PM

P: 1,017

Do you know the triangle law of vector addition? Use it. You have the angles, and the magnitudes...




#3
Sep2907, 02:32 PM

P: 173

I'm not sure what the angles are from anticlockwise. Cathy 



#4
Sep2907, 09:07 PM

HW Helper
P: 4,125

Resolving forces
divide the forces into horizontal and vertical components...
what is the horizontal component of P? what is the vertical component of P? 


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