by ddreyfuss

For homework this weekend, do a little research about what a “simple machine is” (like 10 mins). Then, observe the world around you for the day. See how many you can find! Take some pictures Then, post these and write on your blog about what you found and how you think these machines make the tasks they are associated with easier (less effort etc.)

A simple machine is a mechanical device that changes the directions or magnitude of force. Some simple machines include levers, pulleys, inclined planes, wedges, screws, and wheel and axels.

Here are some examples:

unnamedThis is an example of a pulley. This makes pulling your shades up or down easier because you do not have to pull or push the shades themselves. Since the top of the fabric for the shades is so high up, it would make it very difficult to control the shades if you did not have the pulley device. unnamed-1This simple machine is an example of a screw. This device was attached to a drawer’s handles. It makes things easier because it keeps the handle on the dresser securely, which makes it easier to open drawers.

unnamed-2These stairs are an example of a inclined plane, which is a form of a ramp. They make getting to different floors easier because it enables people to actually reach other floors. Getting up and down would otherwise be impossible (excluding elevators).

unnamed-3The knife is an example of a wedge. The thinness and sharpness of the knifes makes cutting easier and cleaner.