P2 - Elasticity

Question 0

Give 2 things that EPE is directly proportional to

Answer 0

Spring’s stiffness

Square of spring’s extension

Question 1

What is elastic potential energy?

Answer 1

Stored potential energy in any elastic object when it is stretched, twisted or otherwise deformed

Question 2

When is a material said to have elastic properties?

Answer 2

If you apply a force to it by stretching or compressing and then release all force, it will revert to its original shape

Question 3

What is Hooke’s Law?

Answer 3

If you apply a force to a spring it will stretch and the extension produced is directly proportion to the force applied

Question 4

What is the formula for calculating spring constant?

Answer 4

Spring constant = Force applied / Extension

k = F / x

Question 5

What is the elastic limit?

Answer 5

How far you can stretch a spring so that when you remove all force, it reverts to its original length

Question 6

What is the formula for calculating energy used on a spring?

Answer 6

Energy = Force * Extension / 2

Question 7

How does stretched rubber lose energy?

Answer 7

As heat

Question 8

What are the 2 groups of energy?

Answer 8

Stored potential energy

Energy in use