Having hauled it to the top of a tilted driveway, a child is holding a wagon from

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Having hauled it to the top of a tilted driveway, a child is holding a wagon from rolling back down. The driveway is inclined at 20° to the horizontal. If the wagon weighs 150 N, with what force must the child pull on the handle if the handle is parallel to and pointing up the incline?

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