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A spring is hanging from the ceiling. Attaching a 480g mass to the spring causes

ID: 2207155 • Letter: A

Question

A spring is hanging from the ceiling. Attaching a 480g mass to the spring causes it to stretch 21.0cm in order to come to equilibrium. What is the spring constant? Express your answer with the appropriate units. From equilibrium, the mass is pulled down 10 cm and released. What is the period of oscillation? Express your answer with the appropriate units. What is the maximum speed of the mass? Express your answer with the appropriate units. At what position or positions does it have this speed? Check all that apply. highest position equilibrium position lowest position

Explanation / Answer

a)F=mg=kx so k=mg/x=.48*9.8/x=22.4 N/m(ans) b)T=2pi*sqrt(m/k)=.92 s (ans) c)speed=A*omega=.10*2pi/T=.68 m/s d)highest/lowest

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