Example: Find the resultant of the two forces illustrated in the diagram.
\[R^2=35^2+45^2-2 \times 35 \times 45 \times cos140^o=6063 \]
\[R=77.87N\]
to 2 decimal places.
Resultant of Two Forces Using Vectors
To find the resultant of two forces acting at a point, construct a parallelogram with the forces as the sides of the parallelogram. The resultant will be a diagonal of the parallelogram.
Example: Find the resultant of the two forces illustrated in the diagram.
Example: Find the resultant of the two forces illustrated in the diagram.