Unit 4 Vocabulary
a rigid bar pivoted about a fulcrum
the pivot about which a lever turns
the force applied to a machine when a machine is used to do work.
a quantity that can be processed or transported at one time
the part of a lever on which an effort force is applied
distance between the load force and fulcrum
Class 2 Lever
A lever in which the load is between the fulcrum and the effort.
Class 3 Lever
A lever in which the effort is between the fulcrum and the load
Unit of Energy
a simple machine for elevating objects
the work done on a machine as the input force acts through the input distance
the work done by a machine as the output force acts through the output distance
the ratio of the force exerted by a machine to the force applied to it
distance traveled per unit time
The study of workplace equipment design or how to arrange and design devices, machines, or workspace so that people and things interact safely and most efficiently.
Carpal Tunnel Syndrome
a disorder caused by compression of a nerve in the carpal tunnel (where the nerve passes through the wrist)
lifting device consisting of a horizontal cylinder turned by a crank on which a cable or rope winds
the length of a line segment between the center and circumference of a circle or sphere
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
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
A group of 2 or more gears
The gear that is providing force to turn the other one. Often, this gear is attached directly to the motor axle.
The gear that is receiving the force to produce motion.
tooth on the rim of gear wheel
The relationship between the speed of rotations of a smaller gear and a larger gear, can be calculated by dividing the number of driver gear teeth by the number of follower gear teeth.
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
A pulley attached in position above a load to be lifted.
attached to the object being lifted and it decreases the amount of force needed to lift a load
Block and Tackle
pulley blocks with associated rope or cable
Two or more pulleys working together
the mechanical energy that a body has by virtue of its motion
the mechanical energy that a body has by virtue of its position
the act of sending a message
the ratio of the output to the input of any system
force into or from an action or state, either physically or metaphorically
a part of a structure having some specific characteristic or function
the force applied to a unit area of surface
a gas or liquid exerts an equal force in all directions in a closed container
Mechanical system that raises heavy objects.
system in which blood is contained within a network of blood vessels
use the force of a liquid in a confined space, apply two essential characteristic of fluids - their in compressibility and their ability to transmit pressure
Transportation system used in many health care facilities for specimens and paper-based documentation.
control consisting of a mechanical device for controlling the flow of a fluid
a mechanical device that moves fluid or gas by pressure or suction
a system that is part of some larger system