Statics of rigid bodies
Stuck on the enclosed question.
I have done the first part, taken moments about A, found P to be , or 17.0N to 3sf. I am taking as 9.8N btw.
What I can't do is the second part, find the magnitude of R. I know that there are reactions at R, horizontal and verticle, I am just having problems resolving them and then working out.
Any help would be greatly appreciated
There are only three forces acting on the rod: the weight 4g, and the forces P and R. If the system is in equilibrium then these forces form a vector triangle, as in the attachment. You can find the magnitude of R by applying the cosine rule in this triangle.
Originally Posted by craig
Thank you! Not thought/been taught to do it this way, it is a lot simpler than messing around with resolving forces :)
Originally Posted by Opalg