sphyics said:P.E of a body in the graitational field of planet is zero. The body must be at:
a) Centre of planet b) on the surface of planet c) Infinite distance d) At distance equal to radius of earth
how to think over the problem.
As berkeman says, you need a reference point. I suspect that they want you to use the standard formula for the gravitational PE between two bodies, which has a built-in reference point. What is that formula?sphyics said:how to think over the problem.
Potential energy is the energy possessed by an object due to its position or state. It is the energy that is stored and can be released when the object's position or state changes.
There are several types of potential energy, including gravitational potential energy, elastic potential energy, chemical potential energy, and nuclear potential energy.
The formula for potential energy depends on the type of potential energy being considered. For example, gravitational potential energy is calculated as mass multiplied by acceleration due to gravity multiplied by height. Other types of potential energy may have different formulas.
The potential energy of a body is affected by its mass, height or position, and any external forces acting on it. For example, increasing the mass or height of an object will increase its potential energy, while applying a force in the opposite direction of gravity will decrease its potential energy.
Yes, potential energy can be converted into other forms of energy, such as kinetic energy, thermal energy, or electrical energy. This conversion typically occurs when the object's position or state changes, releasing the stored potential energy.