7. Friction, Inclines, Systems
Intro to Springs (Hooke's Law)
6:32 minutes
Problem 9b
Textbook Question
Textbook QuestionA 30 g mass is attached to one end of a 10-cm-long spring. The other end of the spring is connected to a frictionless pivot on a frictionless, horizontal surface. Spinning the mass around in a circle at 90 rpm causes the spring to stretch to a length of 12 cm. What is the value of the spring constant?
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