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Q1. A pendulum has a length L = 1.05 m. It hangs straight down in a jet plane about to take off as shown by dotted line. The jet then accelerates uniformly, and while the plane is accelerating, the equilibrium position of the pendulum shifts to position shown by the solid line, with D = 0.430m. Analyse the magnitude of the plane's acceleration.

Q2. An m=8.25 Kg mass is suspended on a string that is pulled upward by the force of F=83.3 N. If the upward velocity of the mass is 3.25 m/s right now, what is the velocity 5.50 s later?

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