Recent content by Jonathan Yang

He is just looking at the case when phi + theta = pi radians

I think you calculated the lever arm incorrectly. If you choose point A, the lever arm that is perpendicular to the line of action is (c/2)/2 or c/4

Where is the diagram?

The first two problems are actually quite simple. 1. Assume that the calls are indistinguishable. We know that there has to be at least one phone call each day. This means that we can distribute 1 call to each day. The problem now reduces to arranging 5 calls amongst the 7 days. We can use a...