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# What is the potential energy of a rock that weighs 100 newtons that is sitting on top of a hill 300 meters high?

###### Wiki User

###### November 10, 2009 5:45PM

## Potential Energy

Ep = mgh = wh

9.8j

## Related Questions

###### Asked in Physics, Energy, Kinematics

### A 5kg object is being lifted to a height of 8 meters and is dropped what is the kinetic energy of the object at 2 m?

After falling 6 meters, potential energy corresponding to those
6 meters will be converted to kinetic energy. The potential energy
(for the 6 meters) is mgh = (5 kg)(9.82 m/s2)(6 m) = 294.6 J, so
that is also the kinetic energy, since potential energy has been
converted to kinetic energy.
After falling 6 meters, potential energy corresponding to those 6
meters will be converted to kinetic energy. The potential energy
(for the 6 meters) is mgh = (5 kg)(9.82 m/s2)(6 m) = 294.6 J, so
that is also the kinetic energy, since potential energy has been
converted to kinetic energy.
After falling 6 meters, potential energy corresponding to those 6
meters will be converted to kinetic energy. The potential energy
(for the 6 meters) is mgh = (5 kg)(9.82 m/s2)(6 m) = 294.6 J, so
that is also the kinetic energy, since potential energy has been
converted to kinetic energy.
After falling 6 meters, potential energy corresponding to those 6
meters will be converted to kinetic energy. The potential energy
(for the 6 meters) is mgh = (5 kg)(9.82 m/s2)(6 m) = 294.6 J, so
that is also the kinetic energy, since potential energy has been
converted to kinetic energy.

###### Asked in Physics

### How do objects acquire potential energy?

For an object to require potential energy a force must be acting
on it in a certain direction. Even though the object doesnt move
doesnt mean it has potential energy. The most common force of
otential energy is Gravity. When an object is lifted off the ground
gravity becomes stronger.
For a formula of proof then use E=FxD (Energy=Force applied x
Distance travelled). If a ball has been lifted by 10 Meters with a
force of 500 Newtons then it has a Potential Energy of 5000 Newton
Meters,

###### Asked in Physics, Energy

### What is the gravitational potential energy of a microscope with a mass of 0.5 kg sitting on a shelf 1 m from the floor?

Gravitational potential energy is the product of the force
required to lift the mass and the height. For a mass of 0.5 kg, the
force attracting it to the earth is 0.5 x 9.81 Newtons. (9.81 is
the acceleration of a body in freefall, in units of meters/sec2.)
As in this case the mass is raised 1 meter, its energy is 0.5 x
9.81 x 1 = 4.905 Joules.

###### Asked in Physics, Energy, Kinematics

### If you have a 2kg pendulum bob that is 6 meters above the ground at its high point and 1 meter at its low point how can you figure the kinetic energy?

Calculate the potential energy at its highest point. Don't use
the 6 meters above the ground - use the 5 meter difference from the
lowest point. This part of the potential energy gets converted into
kinetic energy, when the pendulum is at its lowest point. Just
assume that all the potential energy (for the 5 meters difference)
get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the
6 meters above the ground - use the 5 meter difference from the
lowest point. This part of the potential energy gets converted into
kinetic energy, when the pendulum is at its lowest point. Just
assume that all the potential energy (for the 5 meters difference)
get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the
6 meters above the ground - use the 5 meter difference from the
lowest point. This part of the potential energy gets converted into
kinetic energy, when the pendulum is at its lowest point. Just
assume that all the potential energy (for the 5 meters difference)
get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the
6 meters above the ground - use the 5 meter difference from the
lowest point. This part of the potential energy gets converted into
kinetic energy, when the pendulum is at its lowest point. Just
assume that all the potential energy (for the 5 meters difference)
get converted into kinetic energy.