Two identical metal blocks resting on a frictionless horizontal surface are connected by a light metal spring having constant of 148 N/m and unstretched length of 0.3 m. A total charge of Q is slowly placed on the system causing the spring to stretch to an equilibrium length of 0.7 m. Determine the value of Q, assuming that all the charge resides on the blocks and the blocks can be treated as point charges. Answer in units of C.(adsbygoogle = window.adsbygoogle || []).push({});

I drew a free body diagram, but I have no idea where to go from there.. can someone please help me?

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# Homework Help: Charged blocks and spring

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