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Education  60.5K views 385 likes 18 dislikes   18 May 2014
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Today I will talk about potential energy and kinetic energy.
Hoy os voy a hablar de la energía potencial y de la energía cinética.
The potential energy is what results from the position of an object
La energía potencial que es la que resulta de la posición de un objeto
respect to gravity
respecto a la gravedad
and enables the ability to do work.
y le posibilita la capacidad de realizar trabajo.
This particular one is called gravitational potential energy.
Ésta en particular se denomina energía potencial gravitatoria.
We also have other potential energies,
También tenemos otras energías potenciales
for example, the elastic potential energy.
como la energía potencial elástica.
that could be when we stretch
que podría ser cuando estiramos
a rubber band or when we compress and stretch a spring.
una goma o cuando comprimimos y estiramos un muelle.
The object to the right has more potential energy than the left one,
El objeto de la derecha tiene mayor energía potencial que el de la izquierda
therefore the greater the height,
por tanto a mayor altura
the greater the potential energy.
mayor será la energía potencial.
On the other hand,
Por otro lado,
of these two objects,
de estos dos objetos,
the one of the left has more potential energy,
tiene mayor energía potencial el de izquierda
since it has a greater mass.
puesto que tiene mayor masa.
Therefore, the greater the mass, the greater the potential energy.
Por tanto, a mayor masa mayor energía potencial.
The greater the gravitational attraction,
A mayor atracción gravitatoria
the greater the potential energy.
mayor será la energía potencial.
Potential energy is equal to the mass
La energía potencial es igual a la masa
times the acceleration of gravity,
por la aceleración de la gravedad
times its height.
por la altura.
Now let's calculate the energy potential of this object in relation to the table.
Ahora vamos a calcular la energía potencial de este objeto con respecto a la mesa.
We measure the object's height ...
Medimos a la altura que se encuentra el objeto...
which it is 16.7 centimeters
que son 16,7 centímetros
And now we will measure its mass with this scale.
Y ahora vamos a medir su masa con esta báscula.
1135 grams.
1135 gramos.
Potential energy on earth
La energía potencial en la tierra
It will therefore be
será por tanto
mass
la masa
times the acceleration of gravity on the Earth, which is 9.81 meters per second squared,
por la aceleración de la gravedad en la Tierra, que es 9,81 metros por segundo al cuadrado,
times the height
por la altura
which gives us a total of 1.86 joules.
que nos da un total de 1,86 julios.
Instead, the potential energy in the moon will be...
En cambio, la energía potencial en la Luna será
the same mass, the same height,
la misma masa la misma altura,
but different acceleration of gravity, in this case
pero diferente aceleración de la gravedad, en este caso
1.62 meters per second squared.
1,62 metros por segundo al cuadrado.
That gives us a total of
Que nos da un total de
0.30 joules
0,30 julios
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