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(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)
