41. Which graph(s) represent the elastic potential energy of the spring as a function of displacement at? A. | only B. | and II only
41. Which graph(s) represent the elastic potential energy of the spring as a function of displacement at? A. | only B. | and II only C. II only D. I\" only 42. A student has three simple pendula: pendulum A has mass M and length L. Pendulum B has mass M and length 2L, and pendulum C has mass 2M and length 2L. The mass of the strings are negligible. Which of the following is the correct ranking for the periods of these three pendula? A. TA
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