hzava asked in Science & MathematicsPhysics · 2 months ago

What is the force that the floor exerts upward to the chair?

A book exerts a force of 2 N downwards into a chair that exerts the force of 5 N downwards to the floor it stands on. What is the force that the floor exerts upward to the chair?

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  • Dixon
    Lv 7
    2 months ago

    To me, the question reads as the chair (with the book on it) exerts 5 N down toward the floor. Then assuming the chair is stationary w.r.t. the floor, the floof must exert 5 N  up.

  • oubaas
    Lv 7
    2 months ago

    Reaction force = 5+2 = 7.0 N up 

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