Mathematics

Problem

Two vectors

\mathbf{P}

and

\mathbf{Q}

act successively at a point. a. (a) State the law of vector addition that relates the resultant of

\mathbf{P}

and

\mathbf{Q}

. b. (b) With the help of a neat, labelled scale diagram, illustrate how this law is applied to obtain the resultant when

\mathbf{P}

and

\mathbf{Q}

act one after the other. c. (c) Describe, with sketches, how the graphical procedure for subtracting

\mathbf{Q}

from

\mathbf{P}

differs from the procedure for adding the two vectors.