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How won't the answer be 10m per sec. A 100kg box is sitting on top of a shelf and has 500J of gravitational potential energy. if the box were to fall off the shelf what its velocity be?
Wiki User
∙ 6y ago
At that speed, its kinetic energy would be quite a bit more than its previous potential energy.To solve this, assume that all the potential energy will be converted to kinetic energy. Replace the energy and the mass into the equation for kinetic energy, and solve for speed.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoSimple! It is because the calculation which led you to the answer 10 ms-1 was wrong.
Gravitational potential energy = mgh = 500, where m is the mass = 100 kg, g is the acceleration due to gravity and h is the height.
m = 100 kg => gh = 5.
Using the equations of motion,
v2 - u2 = 2gh (2as in standard "SUVAT" terms)
where u is the initial velocity (= 0 ms-1) and v is the final velocity.
Therefore v2 - 0 = 2*5 = 10
So it is v2 which is 10, not v. (The superscript 2 is not simply for decoration!)
and therefore v = 3.1623, approx.
Wiki User
∙ 6y agoThe velocity is the square root of (2 PE/m) where PE = 500 and m = 100; that is the square root of 10 or 3.16 m/sec
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The ball sitting on steps has potential energy due to its position and gravitational pull. As it rolls down the steps, potential energy is converted into kinetic energy.
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The type of energy of a boulder sitting on a cliff is potential energy. Potential energy is possible energy as opposed to actual energy. If it were to start rolling down the hill, the energy would change to kinetic energy.
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Does a book sitting on a shelf have gravitational potential energy?
YES!
Does speed affect gravitational potential energy of an object?
No, speed does not directly affect the gravitational potential energy of an object. Gravitational potential energy depends on an object's mass, height above a reference point, and the acceleration due to gravity, but not its speed.
If you throw a ball into the air where will it have the greatest gravitational potential energy?
The ball has the highest gravitational potential energy when it is at its highest point in the air, as that is when it has a velocity of zero and is up the highest.
The energy of position such as a rock on a hill is what energy?
The energy of position in this scenario is gravitational potential energy. This energy is determined by an object's position in a gravitational field, such as the height of the rock on the hill. It represents the potential for the object to do work if it were allowed to move to a lower position.
Is gravitational energy kinetic?
Gravitational energy is the potential energyassociated with the gravitational field.
Why is potential energy called gravitational potential energy?
Potential energy and gravitational potential energy are different from each other ."Potential energy is the ability of a body to do work." Anddue_to_its_height.%22">"Gravitational potential energy is the ability of a body to do work due to its height."Gravitational potential energy is a type of potential energy.
What energy does a boulder have sitting on top of a mountain?
A rock on the top of a hill has potential energy. When it falls it has kinetic energy. You are probably in 6th grade to be learning this. :) Hope this helped you!
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Gravitational-potential energy.
Which has greater gravitational potential energy a car sittknv on top of a hill or a bowling ball sitting kn top of the same hill?
Gravitational potential energy is proportional to the object's height and its mass. So if the car has more mass than the bowling ball has, then it also has more gravitational potential energy.
Is gravitational energy an example of kinetic energy or potential energy?
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A squirrel running up a tree and sitting on a branch shows what kind of energy conversation (apex)?
Kinetic energy becoming potential energy.
