Using Springs (Machines Inside Machines)

Type

Book

Authors

Wendy Sadler

ISBN 10

1410914461

ISBN 13

9781410914460

Tags

How Things Work, Machinery

Description

A spring is made of some material wound around a cylinder shape. If a spring is going to be useful it needs to be made of stiff material that will keep its shape. Springs are useful because once they are made into a shape, they want to stay in that shape. - from Amzon

Number of Copies