\"\"

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The magnitude of boat is \"\".

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The force is required to hold a boat and its trailer in place on a ramp whose inclination is \"\" to the horizontal.

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Draw the related diagram:

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\"\"

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Observe the graph:

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\"\".

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\"\"

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\"\"

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\"\"

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\"\".

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The boat weighs approximately \"\".

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\"\"

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The boat weighs approximately \"\".