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Physics, 06.11.2020 22:00 willveloz4

In the figure, two blocks of masses m and 3m are linked by a light, inextensible rope that passes through an ideal pulley. Block m is tied to a spring with force constant k that joins it to the floor. Initially, the spring is in its equilibrium position and the entire system is at rest. a) Find the maximum distance x that the spring elongates if the system starts from rest.
b) What is the speed of the blocks when they have travelled half that distance?

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