1. A mass (2.1 kg) and spring (k = 243 N/m) system oscillates with an amplitude of 3 cm. What is the total mechanical energy of the system? What is the maximum speed of the mass? What is the maximum acceleration of the mass?

2 . A pendulum bob on a light string of length L is arranged as shown in the figure. There is a peg stuck into the wall a distance L/3 below the point of suspension. What is the period of small oscillations for this system?

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