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sweet-buds
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Homework Statement
A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of the normal force N on the block from the floor as magnitude F is increased from zero if force F is a)downward b)upward
Homework Equations
Let m be the mass of body. ideally if the body were to be at rest , and considering only vertical motion, N(reaction force on body from surface)=mg
1) if force F is downward, F+mg> N. The N would adjust in a way such by increasing it s value so that it can counter F+mg force else the block will break through the surface
2)the N would decrease or else the block would raise above the surface.
The Attempt at a Solution
a)downward= N increases
b)upward=N decreases