posted by Ame .
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 11.5 s.
(a) How tall is the tower?
(b) If this pendulum is taken to the Moon, where the free-fall acceleration is 1.67 m/s2, what is the period there?______S
a. h = g*T^2/4pi^2.
h = 9.8*(11.5)^2/39.4 = 32.9 m.
b. T^2 = 4pi^2*(L/g).
T^2 = 39.4*(32.9/1.67) = 776.2
T = 27.9 s. = Period