Hello

how do we get the resultant force of a vector id the the forces were in different directions ?

and how do we use the parellogram thingi

do we just add the forces?

please can some1 explain me this in their own words

thanks alot

Since this is not my area of expertise, I searched Google under the key words "vector force resultants" to get these possible sources:

http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/vectors/u3l1c.html
http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/vectors/u3l1b.html
http://www.engin.brown.edu/courses/en3/Notes/Statics/forcesum/forcesum.htm
http://dev.physicslab.org/Document.aspx?doctype=5&filename=Compilations_CPworkbook_InclineForceResultants.xml
http://www.walter-fendt.de/ph14e/resultant.htm

There are other sites available, if you want to continue the search.

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

ok make the parallelogram and then make the resultant...then if you have an agle, the other side must be 180-given angel....so then use the law of cosines to figure out the length of the resultant!

a^2= b^2+c^2-2bcCosA

To find the resultant force of two vectors, which are in different directions, you can use the parallelogram method. Here's how you do it:

1. Draw the two vectors adjacent to each other, with their tails at the same point.
2. Extend the two vectors to form a parallelogram, with the original point as one vertex.
3. Draw a diagonal from the original point to the opposite vertex of the parallelogram. This diagonal represents the resultant force.
4. Measure the length of the diagonal using a ruler or scale.
5. If you have an angle between the two initial vectors, the angle opposite will be 180 degrees minus the given angle.

Now, to calculate the magnitude of the resultant force using the law of cosines:

1. Label the lengths of the two initial vectors as a and b.
2. Label the length of the resultant force as c.
3. Use the formula a^2 = b^2 + c^2 - 2bc * CosA, where A is the angle opposite the resultant force.
4. Rearrange the equation to solve for c (magnitude of the resultant force).

By following these steps and using the law of cosines formula, you can determine the magnitude of the resultant force when dealing with vectors in different directions.