Table of Contents
How does gravity affect the law of conservation of energy?
According to the law of conservation energy can’t be created or destroyed and the kinetic energy comes from the gravitational pull so where does the gravitational pull gets its energy.
Is gravitational energy renewable or nonrenewable?
Different energy sources
| Energy | Energy store | Renewable or non-renewable |
|---|---|---|
| Hydroelectricity | Gravitational potential | Renewable |
| Geothermal | Internal | Renewable |
| Tides | Kinetic | Renewable |
| Sun | Nuclear | Renewable |
What gravitational potential energy depends on?
The factors that affect an object’s gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in.
What does gravitational energy depend on?
mass
The gravitational potential energy of an object depends on the mass of objects, and how far away they are from each other. More massive objects have more gravitational pull. (Remember that just because something is bigger, doesn’t mean it has more mass!)
What is the source of gravitational energy?
potential energy
Gravitational energy is potential energy stored in an object based on its distance from the Earth. Potential energy is energy that is stored in an object or substance. Gravitational energy is a form of potential energy. The Earth, the Sun, planets and stars all produce significant amounts of gravity.
What is the difference between gravitational potential and gravitational potential energy?
The gravitational potential at a point is defined as the amount of work done on a unit mass when bringing it from infinity to the given point. The gravitational potential energy of an object is defined as the work done on the object when the object is taken from infinity to the said point.
How does gravitational contraction generate energy?
It generates energy by converting gravitational potential energy into thermal energy (i.e. heat.) Gravity and thermal pressure (the heat from fusion in the core causes pressure.) The Sun is not expanding or contracting because the energy from gravity pulling inward is equal to the gas pressure pushing outward.