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Suppose a book weighs 35 newtons and you apply a force of 50 newtons to lift what is the net force acting on the book?
Wiki User
∙ 12y ago
85 newtons, up .
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Nope.
The force of gravity is 35 newtons, directed down.
The force of your mighty out-stretched arm is 50 newtons, directed up.
The net force on the book is 15 newtons directed up, so that's the direction
in which the book accelerates. (At 15/35 = 3/7 of a 'G' .)
Exactly the same analysis as you'd apply to a rocket launch.
Wiki User
∙ 12y ago
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