A crate with a weight of 50N rests on ahorizontal surface. A person pulls horizontally on it with a force of 10N andit does not move. To start it moving, a second person pulls vertically upwardon the crate. If the coefficient of static friction is 0.4, what is thesmallest vertical force for which the crate moves?

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Jean KeelingLv2

28 Sep 2019

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