A particle of mass(adsbygoogle = window.adsbygoogle || []).push({}); mkilograms is acted on by two forcesF[1]andF[2]with magnitudes3*sqr-root 5newtons andsqr-root 5newtons and directions parallel to the vectors i+2jandi-2jrespectively.

The particle is initially at a position given by the vector2i+j

i was told to calculate the cartesian components ofF[1]andF[2]and hence calculate the total forceF[1] + F[2],acting on the particle in component form

MY SOLUTION

i gotF[1]as:

x=3*(root5)*cos(theta)

y= 3*(root5)*sin(theta)

i gotF[2]as:

x=(root5)*cos(theta)

y= (root5)*sin(theta)

and thenF[1] + F[2]as:

F[x] = 4*(root5)*cos(theta)

F[y] = 4*(root5)*sin(theta)

i was just wondering if i have done it right ???

from there i need to show the couple of the total force about the point with position vector i is zero..................does any understand this part or know how to do it ??????

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# Homework Help: Forces with direction and magnitude

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