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A weight of 50.0 g of mass pivots in a spring. The movement can be described...

A weight of 50.0 g of mass pivots in a spring. The movement can be described by the equation y = 2.50 sin (17.5 t + ?/3) cm, where y is elongation and t is the number of seconds. a) Calculate the elongation when t = 1.70 s b) Calculate the velocity when t = 1.70 s c) Calculate the spring constant

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