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Your 2.85kg physics book rests on a horizontal tabletop.
A. Find the normal force on the book.
B. Suppose you pull up on the book with a 15.0N force, now what's the normal force?
C. Suppose you push down on the book 15.0N Force now what's the normal force?

  • Physics -

    A) m=2.85 kg, F=?, a=9.8 m/s^2 due to gravity.


    F=2.85*9.8=27.9 N

    B) Pulling up creates a force against the forces working so.. n-15N.

    C)Pushing up creates a force with the forces already working so.. n+15N

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