Bending, Stretching, Extension & Energy Transfers

Question 1

What does the term elastic distortion mean

Answer 1

Means that a material will return it to its original shape when the deforming force is removed
eg. Rubber band when stretched a little

Question 2

What is the opposite of elastic distortion

Answer 2

Inelastic distortion - when force is added and then removed it remains deformed
Eg. Drinks can

Question 3

When does extension occur

Answer 3

When an object increases in length

Question 4

When does compression occur

Answer 4

When an object decreases in length

Question 5

Give the equation for hookes law

Answer 5

Force = spring constant x extension
F= K x 𝑥

Question 6

What is spring constant a measure of

Answer 6

The stiffness of a spring up to its limit of proportionality
(Gradient of a straight line)

Question 7

What does a steep line on a graph say about the spring

Answer 7

Steeper line = stiffer spring

Question 8

What are the two forces acting on the spring

Answer 8

Tension
Gravity

Question 9

How do you calculate the energy stored in the spring

Answer 9

Energy stored = 1/2 x spring constant x extension^2
Also energy Under the force extension graph

Question 10

What does it mean for the spring after the limit of proportionality

Answer 10

It is permanently deformed