A Mass on a Spring Vibrates in Simple Harmonic Motion

question 59

Multiple Choice

A mass on a spring vibrates in simple harmonic motion at a frequency of 2 Hz and an amplitude of 7 cm.If a timer is started when its displacement is a maximum (hence x = 7 cm when t = 0) ,what is the speed of the mass when t = 7 s?
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• A) zero
• B) 87.965 m/s
• C) 9.016 m/s
• D) 7 m/s
• E) ​43.982 m/s

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