Wedges
Stone hand-ax from Chennai, India
Try to figure out the mechanical advantage of a rubber doorstop. Does it depend more on the wedge shape or on the friction from the rubber? What is the mechanical advantage of a knife?
Main page about wedges
To find out more about machines, check out these books from Amazon.com or from your library:
ALSO READ:
Why did people want to punch Socrates?
Where did Egyptians bury your liver?
How old are the Rocky Mountains?
What does a half-timbered house look like?
How do you spin wool?
(a project)
Machines
Physics
Chemistry
Biology
Science for Kids home page
History for Kids home page
Cite this page: Carr, Karen. "" Kidipede - History for Kids. 2011. http://www.historyforkids.org/scienceforkids/physics/machines/doing/wedge.htm
