QUESTION IMAGE
Question
- which of the following forms of potential energy do you think this cat has?
a. elastic potential energy
b. magnetic potential energy
c. electrical potential energy
d. gravitational potential energy
forms of potential energy
some forms of potential energy depend on an object’s condition. elastic potential energy is the energy associated with objects that are stretched or compressed. a rubber band has elastic potential energy when it is stretched. because a rubber band will move to return to its unstretched shape, it has the ability to do work. other forms of potential energy depend on the chemical composition of an object. food gives us energy because it has chemical potential energy stored in the bonds between atoms.
gravitational, electrical, and magnetic potential energy all depend on the positions of objects. gravity, electricity, and magnetism generate forces at a distance. objects fall to earth. iron is attracted to magnets. your hair is attracted to a charged balloon. anything acted on by one of these forces has potential energy due to its position. for example, if a magnetic force moves a piece of iron, work is done. the force on the iron and the distance that the iron can move depend on how close it is to a magnet. since work is a force applied over a distance, the potential for work depends on the iron’s position. therefore, the potential energy of the iron depends on its position.
gravitational potential energy
gravitational potential energy is the energy an object has due to its position relative to earth. in everyday life, this means how high above the ground an object is. a pencil that falls off of a table will fall toward the ground. due to its height and to gravity, the pencil has the potential to do work. if you drop the pencil from near the ceiling, the pencil will have more time to accelerate. it will travel farther and hit the ground with more force. because the pencil was higher, it had more potential to do work. gravitational potential energy has a special importance because it constantly affects every object in the universe. we see the effects of gravitational potential energy every day.
identify types of energy
- draw choose a group of objects that you can see from where you are working. draw a diagram of the objects. label the objects that have kinetic or gravitational potential energy in your drawing.
Step1: Analyze the cat's situation
The cat is standing off the ground on a cat - toy.
Step2: Recall potential energy types
Gravitational potential energy is energy due to an object's position relative to Earth (height above the ground).
Step3: Determine the correct type
Since the cat has height above the ground, it has gravitational potential energy.
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D. gravitational potential energy