A seesaw is a simple machine that falls into the lever category. A lever is a long bar or stick that one pushes or pulls against a fulcrum to move something.
A seesaw is a lever because its base acts as a fulcrum and its plank pivots to move the rider's weight up and down. A simple machine is a basic tool that uses force to make work easier to accomplish. Humans have been using simple machines to assist them for thousands of years. The six categories of simple machines are lever, inclined plane, wheel and axle, screw, wedge and pulley.Learn More
To know how to read a tape measure, someone must first know what the marks on the tape measure mean; the full lines that cover the entire width of the tape measure are equal to a full inch. The marks that cover approximately half of the tape measure's width indicate 1/2 of an inch, while the ones that cover a quarter of the width indicate 1/4 of an inch. Lines an eighth of the width are equivalent to 1/8 inch, and the shortest marks indicate 1/16 inch.Full Answer >
A rotating bezel is a circular piece around the crystal of a mechanical watch capable of rotating in one direction or both with markings at five minute intervals. A rotating bezel is used to mark the passage of a specific amount of elapsed time under an hour.Full Answer >
Rotating a screw advances a spiraled incline into a surface. The head of a screw functions as a lever, while its threading is just a long incline that has been wrapped around a vertical shaft.Full Answer >
To use a T-square, place it flat on a drawing board, secure it in place and use it in conjunction with other drawing tools to create the desired shape. The general usage of a T-square takes only a few minutes and requires the T-square, paper, a pencil and a drawing board. A square, triangle or French curve may be necessary for other shapes.Full Answer >