Topic 15: Forces And Matter

Question 1

How many forces are required to compress bend or stretch an object?

Answer 1

More than one, it takes multiple forces in different directions to deform object

Question 2

Explain the relationship between the four supplied and the extension of an elastic object

Answer 2

The extension is directly proportional to the force supplied provided that the limit of proportionality is not exceeded

Question 3

What is meant by an inelastic (plastic) deformation?

Answer 3

-A defamation which results in the object being permanently changed
-The object doesn’t return to its original shape when the force is removed

Question 4

What type of energy is stored in a spring when it’s stretched?

Answer 4

Elastic potential energy

Question 5

What can extension be replaced with in the equation for spring force?

Answer 5

Compression

Question 6

What’s the difference between elastic and inelastic distortion?

Answer 6

Elastic = temporary change, object reverts to its original shape once the forces are removed
Inelastic = permanent change in shape, irreversible