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Lauren is pulling on a trunk with a 15-N force. Wayne pulls at right angles to Lauren. With how much force must Wayne pull to make the resultant force on the trunk 22 N? Round answer to one decimal place.

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X^2 + Y^2 = R^2,
(15)^2 + Y^2 = (22)^2,
Y^2 = (22)^2 - (15)^2 =259,
Y = 16.1N.

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