A simple pendulum is made from a bob of mass 0.04 kg suspended on alight string of length 1.4m. Keeping the string taut, the pendulum is pulled to one side until it has gained a height of

Answer 1

(a) M g H, where H = 0.1 m, M = mass and g = acceleration of gravity
(b) If amplitude (A) is the maximum horizontal displacement, then
A = sqrt[1.4^2 - 1.3^2] = 0.52 m
(c) (2 pi)*sqrt(L/g)
where L = 1.4 m
(d) A*sqrt(g/L)
(e) M g H (same as maximum energy)