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Newton's Third Law: The Troubles of Getting Ice Cream With a

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Jeffrey Wang

on 18 October 2013

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Transcript of Newton's Third Law: The Troubles of Getting Ice Cream With a

Newton's Third Law states that:
For every action, there is an equal and opposite reaction.

This means that if a first object exerts a force on a second object, the second object exerts an equal and opposite force back onto the first object. Newton's Third Law is apparent in normal force, which is the force perpendicular to the surface that an object lies on. Normal force is present because the force of gravity on an object that pushes on a surface has an equal and opposite reaction force, the normal force, according to Newton's Third Law.

Newton's Third Law: The Troubles of Scooping Ice Cream With a Spoon
Newton's Third Law
Conclusion
Abdullah Choudhry
Jeffrey Wang

Newton's Third Law has many real world implications. An example of it lies in a common nuisance that all ice cream eaters have dealt with, getting ice cream out of a container with a spoon.
Newton's Third Law and Ice Cream
This was the spoon before it was used to scoop ice cream out of the container.
This picture shows the act of scooping ice cream with a spoon. The spoon applies an upward force on ice cream, and the ice cream applies an equal and opposite force on the spoon according to Newton's Third Law.
As seen in the comparison above, the act of scooping ice cream out of the container with the spoon bent the spoon. This was because of the equal and opposite reaction force to the upward force of the spoon on the ice cream. The force of this reaction was greater than the tension of the spoon, so the spoon bent. This bending was because of Newton's Second Law, which states that force is equal to mass times acceleration.
Newton's Third Law, that every reaction has an equal and opposite reaction, applies to all forces in the universe. In many cases, the reaction force has a noticeable effect. Scooping ice cream out of a container with a spoon is such a case because the force of the ice cream on the spoon is strong enough to overcome the tension of the spoon and bend it according to Newton's Second Law. The cause of this force is explained by Newton's Third Law. The force of the ice cream on the spoon that bends the spoon is a reaction force.
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