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Students set a spring into oscillation with a mass of 50 g and find that it oscillates 50 times in 1 min and 20 seconds.
(a) What is the spring constant k in N/m?
(b) Suppose they double the mass to 100 g, and measure 50 oscillations. What is the total time t they measure and what is the corresponding period T ?
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A cabinet of mass 31 kg is on a level floor. Between the cabinet bottom and the floor, the static friction coefficient is μs = 0.3 and the kinetic friction coefficient is μk = 0.2. If a force of 380 N is applied on the cabinet horizontally, what woul..
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