The math help thread

How are we certain that the torque of the mass is 98*1? Since the entire mass is from 0 to 2m. It is just because 1 is the average distance?

Yes.

To be more technical about it, 1 is the location of the mass' center of gravity (centroid), where you can represent the object as a point mass for theoretical purposes. The same thing applied to the meter stick in the other problem you presented, no?


EDIT: If your textbook does the problem assuming Fpy is 0 or something to that effect, you should probably do it that way. But as a future reminder, that is not how reality works.