Physics - Elastic Potential Energy

2020-11-30
1 min read

See also:

What is the area under a force-extension graph??

Work done.

The energy put into a spring by stretching it is called??

Elastic potential energy.

Stretching a spring over a distance is doing what in relation to work done??

Applying a force over a distance.

PHOTO FORCE EXTENSION AREA What does the area of the triangle represent??

Work done.

PHOTO FORCE EXTENSION AREA What is the formula for the area of the triangle??

$$ \frac{1}{2}Fx $$

PHOTO FORCE EXTENSION AREA The formula for the area of the triangle is $\frac{1}{2}Fx$. How could you also write $F$??

$$ F = kx $$

PHOTO FORCE EXTENSION AREA Substitute $F = kx$ into $\frac{1}{2}Fx$??

$$ \frac{1}{2}kx^2 $$

What is the formula for elastic potential energy??

$$ E = \frac{1}{2}kx^2 $$

Elastic potential energy is directly proportional to…??

$$ E \propto x^2 $$

If you double extension, what happens to the elastic potential energy??

It quadruples.

How could you calculate the velocity of a compressed spring being released??

Equate kinetic energy to elastic potential energy.


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date: 2020-11-30 12:52
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title: Physics - Elastic Potential Energy