Glossary

__ Glossary __
BIKE · **Lever-** a rigid bar pivoted about a fulcrum. · **Wheel and axle-**hoist so arranged that a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with the wheel. · **Pulley-**a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope. · **Screw-**a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole.

· **Wedge-** something solid that is usable as an inclined plane (shaped like a V) that can be pushed between two things to separate them.
RAMP · **Inclined Plane-** simple machine for elevating objects; consists of plane surface that makes an acute angle with the horizontal.