Force & Moment Homework: Find Moment of Force P About O

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Homework Help Overview

The problem involves calculating the moment of a force P about a point O, with the force given as 300N at an angle of 30 degrees. The context includes the application of trigonometric laws.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the angle's reference point, with one noting a potential mix-up between components of the force. There is a suggestion to reconsider the angle used in calculations.

Discussion Status

The discussion is ongoing, with participants exploring the implications of the angle's orientation and its effect on the components of the force. Some guidance has been offered regarding the correct interpretation of the angle.

Contextual Notes

There is mention of an attached document for reference, which may contain additional details relevant to the problem setup.

drkidd22
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Homework Statement



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

Homework Equations



cosine law
sine law

The Attempt at a Solution



see attached. Please confirm I did this ok.
 

Attachments

Physics news on Phys.org
Note that the angle is with respect to the vertical. I think you may have mixed up Fax and Fay.
 
Yeah I noticed that. I should use 60 degrees instead I guess
 
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.
 

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