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A 10-Kg Mass Oscillates Along the X Axis with Simple Harmonic

Question 138

Multiple Choice

A 1.0-kg mass oscillates along the x axis with simple harmonic motion. Its position as a function of time is given by X = 2 cos( π\pi t/6 + π\pi /3)
Where the units are SI. When t = 2 s, the kinetic energy of the mass is


A) π\pi 2/24 J
B) π\pi 2/72 J
C) 2 π\pi 2/9 J
D) 4 π\pi 2/9 J
E) π\pi 2/4 J

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