Kevin Zhou — Preliminary Problem 1 · Kevin Zhou #Prelim.1
Physics · mechanics
Problem
Problem 1. A projectile is thrown up and passes point A, then point B a height h above A. Let
T and T be the time intervals between the two times the projectile passes A and B, respectively.
A B
(a) Show that an experimentalist can measure g by computing g = 8h/(T2 −T2).
A B
(b) This procedure probably looks a little contrived. Why is it better than doing something
simpler, such as just dropping the ball and using ∆y = gt2/2?