Q1) a 1.2 kg block sliding on a horizontal frictionless surface is attached to a horizontal spring with k =480 n/m. let x be the displacement of the block from the position at which the spring is upstretched. at t = 0 the block passes through x = 0 with a speed of 5.2 m/s in the positive x direction. what are the (a) frequency and (b) amplitude of the block’s motion? (c) write an expression for x as a function of time
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