Resultant Force

Two forces $F1=400lb$ at $0($along the x $-$axis$)$ and $F2=300lb$ at $90($along the y $-$axis$)$ are applied

to a point.

a$.$ Determine the magnitude and direction of the resultant force.

b$.$ Illustrate the vector addition graphically.

Resolving Forces

A force of $600$ N is applied to a point at an angle of $45$ counterclockwise from the positive x axis.

a$.$ Resolve this force into its horizontal $(x)$ and vertical $($ y $)$ components.

b$.$ Explain why resolving forces into rectangular comporiynts is useful in engineering analysis.