A pendulum has a length L = 1.07 m. It hangs straight down in a jet plane about to take off The jet accelerates uniformly, and during that time, the pendulum oscillates about the equilibrium position to a maximum distance D = 0.370 m. Calculate the magnitude of the plane's acceleration. so as i understand if the plane starts moving to the left, the pendulum is thrown to the right. its acceleration is the acceleration of the plane. the acceleration at the farthest point is a=-A*w^2*cos(wt). where the cos is 1 A is either D or the angular distance and w is the ratio between the roots of g and l. but i am wrong. where am i wrong.