A force is given as F=x+5y-z. How do you calculate the magnitude of the force in the direction of the vector A=-3x+2y-2z?
1 Answer
Aug 8, 2018
Explanation:
We can use dot products!
In general,
where
This may be easier to see if we just think of normalizing
Using the first equation, we can easily calculate both known values:
hence
our final answer.