Question

A student wants to make a pendulum that makes one complete swing, away and back, every 1.5 s. What should the student choose for the mass of the bob and the length of the string?

Answer 1

Period should be independent of mass. Period is equal to 2 pi x root (l/g) so if T = 1.5 and g = 9.81 l = (1.5 / 2, pi) ^2 9.81 = 0.559m

Answer 2

Thank you!! =)