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( $\pi$ t/6 + $\pi$ /3)
Where the units are SI. When t = 2 s, the kinetic energy of the mass is

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

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