The system is at rest with the spring unstretchedwhen = 0. The 3-kg particle is then
Chapter 3, Problem 3/170(choose chapter or problem)
The system is at rest with the spring unstretched when \(\theta=0\). The \(3-\mathrm{kg}\) particle is then given a slight nudge to the right. (a) If the system comes to momentary rest at \(\theta=40^{\circ}\), determine the spring constant k. (b) For the value \(k=100 \mathrm{~N} / \mathrm{m}\), find the speed of the particle when \(\theta=25^{\circ}\). Use the value \(b=0.40 \mathrm{~m}\) throughout and neglect friction.
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