Table of Contents
- 1 How does the elastic potential energy in a mass spring system change?
- 2 How will kinetic energy elastic potential energy and mechanical energy change as mass oscillates up and down?
- 3 What happens to the kinetic energy and gravitational potential energy of a ball as it is falling?
- 4 How is gravitational different from elastic potential energy?
- 5 Does the gravitational energy represent potential energy or kinetic energy?
- 6 How is gravitational potential energy and elastic potential energy determined?
How does the elastic potential energy in a mass spring system change?
In the SHM of the mass and spring system, there are no dissipative forces, so the total energy is the sum of the potential energy and kinetic energy. As the object starts to move, the elastic potential energy is converted into kinetic energy, becoming entirely kinetic energy at the equilibrium position.
How will kinetic energy elastic potential energy and mechanical energy change as mass oscillates up and down?
The kinetic energy of the mass is zero, since the mass is temporarily stopped. So, while the mass moves up and down energy changes forms between potential energy due to the spring, potential energy due to gravity, and kinetic energy.
What is the relationship between elastic and gravitational potential energy to kinetic energy?
Gravitational potential energy depends on an object’s weight and its height above the ground (GPE = weight x height). Elastic potential energy is due to an object’s shape. It results when an elastic object is stretched or compressed. The more it is stretched or compressed, the greater its elastic potential energy is.
What happens to the kinetic energy and gravitational potential energy of a ball as it is falling?
In terms of energy, when the ball is released it has kinetic energy, KE. As it starts down, still in free fall, the stored gravitational potential energy is converted back into kinetic energy as the object falls. If there is no work done by frictional forces, the total energy will remain constant.
How is gravitational different from elastic potential energy?
Gravitational potential energy is energy in an object that is held in a vertical position. Elastic potential energy is energy stored in objects that can be stretched or compressed.
How does spring potential energy change relative to the displacement of the spring?
The magnitude of the force required to change the length of a spring-like object is directly proportional to the spring constant and the displacement of the spring. Elastic potential energy is directly proportional to the square of the change in length and the spring constant.
Does the gravitational energy represent potential energy or kinetic energy?
Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2. In fact, all energy has the same units, kg m2 / s2, and is measured using the unit Joule (J).
How is gravitational potential energy and elastic potential energy determined?
An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height. An object possesses elastic potential energy if it is at a position on an elastic medium other than the equilibrium position.
What is gravitational potential energy and elastic potential energy?
Solution
| Gravitational potential energy | Elastic potential energy |
|---|---|
| A body possesses gravitational potential energy if it is placed any height above the ground. (ground is considered as the refence level) | A body possesses elastic potential energy if its shape is changed by squeezing, pushing or pulling. |