Forces and Elasticity

Question 1

What changes of shape can happen due to force

Answer 1

Bending, pulling and pushing

Question 2

What is a change in shape called?

Answer 2

Deformation

Question 3

What is elastic deformation?

Answer 3

When the shape CAN return to its original shape after force is removed

Question 4

What is inelastic deformation

Answer 4

When the shape CANT return to its original shape after the force is moved

Question 5

What is hookes law and its equation?

Answer 5

The size of the deformation is directly proportional to the deforming load or force
F=ke

Question 6

What is the limit of proportionality

Answer 6

Point where hookes law is no longer true when stretching a material

Question 7

What is the spring constant?

Answer 7

Measure of the stiffness of a spring to the limit of its proportionality

Question 8

What happens if the spring constant is high?

Answer 8

The spring is stiffer

Question 9

What is the relation between force and exsention?

Answer 9

Force applied is directly proportional to extension

Question 10

What is elastic limit?

Answer 10

Furthest point a material can be stretched, WHILST being able to return to original shape

Question 11

What happens when an object is stretched past elastic limit?

Answer 11

It cant return to its original shape and is INELASTIC

Question 12

Where does non linear(not directly proportional) extension occur?

Answer 12

Clay or putty

Question 13

What does a force-extension graph look like?

Answer 13

A straight line upwards until is flattens because its past the limit of proportionality so its turned inelastic

Question 14

Explain the force and extension practical in a spring

Answer 14

1)Secure clamp to bench with a G-clap stand
2)Attach two clamps to clamp stand
3)Attach spring to top clamp and ruler to bottom clamp
4)Make ruler vertical with zero at top of the spring
5)Record unloaded length of spring
6)Add masses on 100g at a time till it reaches 1000g and record