Find the moment of force P about point O

drkidd22 · May 7, 2010

Homework Statement

See attached .pdf. Need to find the moment of force P about O. Force P in300N @ 30degree

cosine law
sine law

see attached. Please confirm I did this ok.

Doc Al · May 7, 2010

Note that the angle is with respect to the vertical. I think you may have mixed up Fax and Fay.

drkidd22 · May 7, 2010

Yeah I noticed that. I should use 60 degrees instead I guess

Doc Al · May 7, 2010

drkidd22 said:

Yeah I noticed that. I should use 60 degrees instead I guess

Yes. The x-component is Fcosθ, where θ is the angle with respect to the +x axis.