Reply
Mon 18 Jul, 2005 10:22 am
Two people are needed to carry a crate. One person exerts a force of 156 pounds and the other person exerts a force of 117 pounds. If the angle between the two forces measures 56.8 degrees, find the weight of the crate to the nearest tenth of a pound.
This question in found in the chapter Parallelogram of Forces and the Law of Cosines. I tried using the law of cosines and then the law of sines trying to guess my way through the question. Help....
The law of cosines should work for you if you are using the correct angle.
Draw your picture and determine the angle between the 156 side and the 117 side. (Hint: It is not 56.8 degrees). If you already did that, post your work for the law of cosines and we can go from there.
hint
Your hint is very helpful.
Stumble It!
Tweet This
Bookmark on Delicious
Share on Facebook
Share on MySpace