A 2-Kg Mass Oscillates in One Dimension with Simple Harmonic $\pi$

question 91

Multiple Choice

A 2-kg mass oscillates in one dimension with simple harmonic motion on the end of a massless spring on a horizontal frictionless table according to
X = (6/ $\pi$ ) cos( $\pi$ t + 3 $\pi$ )
Where the units are SI. The total mechanical energy of this system is

• A) 1 J
• B) 3 J
• C) 5 J
• D) 7 J
• E) 9 J

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