| force |
an
influence on the shape, motion, or other characteristics of a
body or system. |
| friction
|
the
resistance of a surface to relative motion, as of an object sliding
or rolling over it. |
| fulcrum
|
the
point of support on which a lever turns. |
| inclined
plane |
a
plane surface inclined at less than a right angle to a horizontal
surface, used to roll or slide a load up or down. |
| lever
|
any
of a class of basic tools consisting of a rigid bar or an equivalent,
acting by pivoting around a fixed fulcrum to transfer applied
force from one point to another. |
| load
|
an
amount of something carried; cargo or freight. |
| machine
|
a
man-made device, usu. driven by a motor or engine, with a system
of interrelated parts that work together to perform a task. |
| axle
|
a
supporting bar or shaft on which, or by means of which, a wheel
or wheels turn. |
| power
|
physical,
mechanical, or electrical energy. |
| pull
|
to bring or try to bring closer by exerting force upon. |
| pulley
|
a
wheel or set of wheels with grooved edges over which a rope or
chain can be drawn in order to change the direction of a pulling
force and increase the capacity for lifting weight. |
| push
|
to
thrust (something) away. |
| screw
|
a
fastener, usu. metal, having a sometimes tapered shank with a
helical thread, driven into a surface by applying pressure to
the head while turning it. |
| spring
|
an
elastic device or object that regains its original shape after
being compressed, stretched out, or otherwise distorted. |
| tool
|
an
instrument, such as a hammer, drill, or other hand-held device,
used for doing work. |
| torque |
the
measured ability of a force to produce turning or twisting around
an axis, such as a gear or shaft. |
| wedge
|
a
piece of wood or metal in a three-dimensional, triangular shape
with a thin edge that is driven or forced between objects to split,
lift, or reinforce them. |
| wheel |
any
instrument, device, or apparatus resembling such a disk or frame
in shape, motion, or function. |
| work
|
physical or mental effort directed toward achieving some result;
labor. |
