Forces and Elasticity

Question 1

Work done to an elastic object is stored as what?

Answer 1

Elastic potential energy.

Question 2

What happens when you apply a force to an object?

Answer 2

Object may stretch and change in shape.

Question 3

Any object that returns to its original shape after the force has been removed is what?

Answer 3

An elastic object.

Question 4

Work is done to an elastic object to…

Answer 4

Change its shape.

Question 5

The energy is not…

Answer 5

Lost.

Question 6

The energy is not lost but is stored by the object as what?

Answer 6

Elastic potential energy.

Question 7

What is the elastic potential energy converted into?

Answer 7

Kinetic energy, when the force is removed and then the object returns back to its original shape.

Question 8

What happens when a spring is supported at the top then a weight is attached to the bottom?

Answer 8

The spring will stretch.

Question 9

The extension of an elastic object is directly proportional to what?

Answer 9

To the load or force applied .

Question 10

What is the extension measured in?

Answer 10

Metres.

Question 11

What is the force measured in?

Answer 11

Newtons.

Question 12

What is the equation for force?

Answer 12

K x e = F.

Question 13

What does k x e = F means?

Answer 13

K - Spring constant.
e - Extension.
F - Force.

Question 14

What does the spring constants (k) value depend on?

Answer 14

The material that you are stretching.

Question 15

What is the spring constant measured in?

Answer 15

Newtons per metre.

N/m.

Question 16

There is a _____ to the amount of force you can apply to an object for the extension to keep on _____ _______

Answer 16

Limit.
Increasing.
proportionally.

Question 17

For small forces, what 2 things are proportional?

Answer 17

Force.

Extension.

Question 18

There is a maximum force that the elastic object can take and still extend proportionally, this is know as the what?

Answer 18

Limit of proportionality.