Force is a wonderful thing. It keeps objects, like my sister from falling over. The formula for force is mass x acceleration. As seen --> my sister is leaning against the wall without falling. My sister is pushing against the wall, but the wall is pushing back against my sister keeping her at equilibrium. Only when the force of my sister is greater than the force of the wall will she move.
This is Newton's Second Law. It keeps most objects at rest, either sitting on top a table or or standing on the ground. The force/push the object exerts on the table/ground is equaled out by the force/push the table/ground exerts back (which can be called the normal force). It is exerted perpendicularly.
1 comment:
hmmmm, if the wall is pushing her to the left, why doesn't she accelerate to the left? there must be a force to the right, but what is it?
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