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# Simple Harmonic motion question watch

1. The height of the water on a beach can be approximated as simple harmonic motion with a period of 12hours If the mean water height is 3.5m, the amplitude of the tide is 1.6m, and `high water' occurs at 7am one day, what would you predict the height of the water to be at 11am?

i used equation
2. (Original post by joyoustele)
The height of the water on a beach can be approximated as simple harmonic motion with a period of 12hours If the mean water height is 3.5m, the amplitude of the tide is 1.6m, and `high water' occurs at 7am one day, what would you predict the height of the water to be at 11am?

i used equation

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