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Flashcards in Forces and Elasticity Deck (18)
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1
Q

Work done to an elastic object is stored as what?

A

Elastic potential energy.

2
Q

What happens when you apply a force to an object?

A

Object may stretch and change in shape.

3
Q

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

A

An elastic object.

4
Q

Work is done to an elastic object to…

A

Change its shape.

5
Q

The energy is not…

A

Lost.

6
Q

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

A

Elastic potential energy.

7
Q

What is the elastic potential energy converted into?

A

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

8
Q

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

A

The spring will stretch.

9
Q

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

A

To the load or force applied .

10
Q

What is the extension measured in?

A

Metres.

11
Q

What is the force measured in?

A

Newtons.

12
Q

What is the equation for force?

A

K x e = F.

13
Q

What does k x e = F means?

A

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

14
Q

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

A

The material that you are stretching.

15
Q

What is the spring constant measured in?

A

Newtons per metre.

N/m.

16
Q

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

A

Limit.
Increasing.
proportionally.

17
Q

For small forces, what 2 things are proportional?

A

Force.

Extension.

18
Q

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

A

Limit of proportionality.