Recent content by Mishy

I don't understand the solution to the following problem: A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. The moment of inertia of the plank about the pivot is (1/3)m(L^2). The plank is displaced by a small...

I was wondering if magnification applies to the vertical and horizontal dimensions, or just the vertical. The following information is about the question I am dealing with. It won't answer my concern above, but give a sens of what is going on. The question is dealing with a thin lens...