What are the examples of elastic potential energy?
Many objects are designed specifically to store elastic potential energy, for example:
- The coil spring of a wind-up clock.
- An archer’s stretched bow.
- A bent diving board, just before a divers jump.
- The twisted rubber band which powers a toy airplane.
- A bouncy ball, compressed at the moment it bounces off a brick wall.
Where is elastic potential energy stored?
spring
How much elastic potential energy is stored in a bungee cord?
Elastic potential energy stored in bungee cord is 20.0 J.
What happens to a spring if the elastic limit is exceeded?
Once a material has gone past its elastic limit, its deformation is said to be inelastic. The higher the spring constant, the stiffer the spring. When an elastic object is stretched beyond its limit of proportionality, the object does not return to its original length when the force is removed.
Is force a constant?
There is one situation, however, in which we do encounter a constant force — the force due to gravitational acceleration, which causes massive bodies to exert a downward force on the Earth. In this case, the constant acceleration due to gravity is written as g, and Newton’s Second Law becomes F = mg.
What is work done give an example?
This means that zero work is being done as the force and distance are not applied in the same direction. Examples: Pushing a car horizontally from rest; shooting a bullet (the powder does the work); walking up stairs; sawing a log.
What happens when friction is constant?
If an object is moving at a constant speed the force of friction must equal the applied (horizontal) force, and for it to be accelerating or decelerating, the force of friction and the applied force must be unequal.
What life would be like without friction?
It opposes motion, meaning if something is sliding on the floor, friction is the force that makes it eventually come to a stop. In a world without friction, the object would continue to slide forever, if not acted on by another force.
What if there was no friction for 1 minute?
Anything you were holding on to, at the moment friction ceased to exist, would instantly fall to the ground or fly out of your hand. If you were walking when friction disappeared, your legs would still work, but you wouldn’t go anywhere.