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Flashcards in Forces and Elasticity Deck (18):
1

Work done to an elastic object is stored as what?

Elastic potential energy.

2

What happens when you apply a force to an object?

Object may stretch and change in shape.

3

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

An elastic object.

4

Work is done to an elastic object to...

Change its shape.

5

The energy is not...

Lost.

6

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

Elastic potential energy.

7

What is the elastic potential energy converted into?

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

8

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

The spring will stretch.

9

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

To the load or force applied .

10

What is the extension measured in?

Metres.

11

What is the force measured in?

Newtons.

12

What is the equation for force?

K x e = F.

13

What does k x e = F means?

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

14

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

The material that you are stretching.

15

What is the spring constant measured in?

Newtons per metre.
N/m.

16

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

Limit.
Increasing.
proportionally.

17

For small forces, what 2 things are proportional?

Force.
Extension.

18

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

Limit of proportionality.