Screw – Simple machines – Physics
A cider press with big wooden screws What is a screw? People always count screws as a separate kind of simple machine. But really screws are just one kind of inclined plane. [...]
17
08, 2017
17
08, 2017
Movable pulley – Simple machines – Physics
Bike hoist pulleys A movable pulley is a way to use a pulley to make it easier to move heavy things - to get a mechanical advantage. In the picture, someone is [...]
17
08, 2017
Pulley – Simple machines – Physics
Clothesline pulley A pulley is really a kind of wheel, just as a screw is a kind of inclined plane. But pulleys are so important that people give them their own category. A pulley [...]
17
08, 2017
Types of lever – Simple machines – Physics
Types of lever: What kind of lever is a see-saw? Three types of lever All levers fall into one of three types of lever. How can we tell which lever [...]
17
08, 2017
Levers – Simple machines – Physics
Levers: An orangutan child using a stick as a lever What is a lever? A lever is basically just a long stick that you push or pull against a fulcrum [...]
17
08, 2017
Simple machines – Physics
An example of a screw, a wedge, a wheel and axle, and a lever Machines are ways to make it easier to do work. Many plants and animals have evolved natural [...]
16
08, 2017
Inclined plane – Simple machines
An inclined plane: Earth ramp to the fortress at Masada (Thanks to www.HolyLandPhotos.org) What is an inclined plane? An inclined plane is any slope or ramp, like a wheelchair ramp [...]
16
08, 2017
What is friction? Definition of friction
Definition of friction: Hands rubbing together is a kind of friction Definition of friction Friction is what happens when any two things rub against each other. These can be solid [...]
16
08, 2017
Examples of wedges – doorstops and knives
A zipper is a kind of wedge - or a lot of little wedges! For a project about wedges, collect as many different kinds of wedges as you can find around [...]
16
08, 2017
C-clamps and screws projects – Physics
A c-clamp is a kind of screw - this screw project uses one. Observation of screws Get hold of a screw and a manual screwdriver and try screwing the screw [...]
