It may, or may not, be zero, depending on what you use as the reference level. The absolute amount of potential energy is physically meaningless; what matters is a difference in potential energy between two points.
That is called gravitational potential energy.
Gravitational potential energy is: m*g*h m=mass g=acceloration due to gravity h=height in relation to zero level/energy because earth's surface (with rare exception) is zero level/energy, meaning that you cant make things fall further than the surface of earth; the potential energy of an object changes based on how much distance you put between the surface and the object, yes.
Gravitational potential energy.
That is called gravitational potential energy.
There is no absolute measure for potential energy. The calculation for potential energy depends on the chosen reference level. Quite often, the Earth's surface is chosen as the reference level - in this case, an object on the surface will have zero potential energy.
There is no absolute measure for potential energy. The calculation for potential energy depends on the chosen reference level. Quite often, the Earth's surface is chosen as the reference level - in this case, an object on the surface will have zero potential energy.
That depends on what reference level you have chosen. If the (arbitrary) reference level you chose is Earth's surface, then anything on the Earth's surface has zero potential energy. If you choose some higher reference level, an object on Earth's surface has a negative potential energy. If you choose a lower reference level, an object on Earth's surface would have a positive potential energy.
gravitational potential energy
1. There is no such thing as absolute potential energy. There is only a difference in potential energy. Any "absolute" level is an arbitrary definition. 2. An object on the surface of the Earth has less energy than one that is higher up, but more than an object that is below the Earth's surface.
It depends on the circumstances but usually such energy is referred to as potential energy. For example your position in a gravitational field may determine the gravitational potential energy. Likewise your position in a spring system may determine the potential energy of the spring.
When you lift an object, the energy transferred to the object is called gravitational potential energy.
Gravitational potential energy - it depends on the distance from the centre of gravity, so on Earth it depends on the height above the Earth's surface