1.

Two forces `F_(1)=1N` and `F_(2)=2N` act along the lines x=0 and y=0, respectively. Then find the resultant of forces.

Answer» x=0 means y-axis `rArrvec(F)_(1)=hat(j)`
y=0 means x-axis `rArr vec(F)_(2)=2hat(i)`
So resultant, `vec(F)=vec(F)_(1)+vec(F)_(2)=2hat(i)+hat(j)`


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