CH 2 Short Answer Flashcards
What does “Inclined” Mean?
Inclined means Tilted
What does “Plane” mean?
Plane means Flat Surface
What is the Modern Archimedes’ Screw used for?
Modern Archimedes’ Screw is used for moving sludge in sewage plants and to gently move fish within hatcheries
What is an Archimedes’ Screw used for?
An Archimedes’ Screw used for lifting water
What are Levers designed for?
Levers are designed so that the force applied to one part of the lever can be changed or redirected in order to move a load.
What is the Load Force sometimes called?
The Load Force is sometimes called resistance
What are the 3 classes of levers, explain each class of lever
Class 1 levers: The fulcrum is between the load force and the input force
Class 2 levers: The load force is between the fulcrum and the input force
Class 3 levers: The input force is between the fulcrum and the load force
What is part of many Physical Systems?
Rotary motion, or turning motion, is a part of many physical systems, either as an input, as an output, or both.
Explain What is Turning Motion
Often, Turning motion is transferred to another part of the system through the use of wheels, pulleys, and gears.
What is an Expample of Turning Motion?
An Example of a Turning Motion is when you ride a bicycle, the gears and chain transform the rotary motion of the pedals into the rotary motion of the back wheel.
An Example of a Turning Motion is a well with a bucket that is raised and lowered by turning a crank. The crank is a modified lever that rotates around its fulcrum.
What is the Most Common Wheel Mechanism?
The Wheel and Axle is the Most Common Wheel Mechanism.
What does a Wheel and Axle Consist of?
A Wheel and Axel consists of a large diameter disk (wheel) attached to a small diameter shaft (axle).
What does using the Wheel to Turn The Axle Change?
Using the Wheel to Turn The Axle Changes a Small Input Force into a Larger Output Force.
What is an Example of Wheel and Axles?
An Example of Wheel and Axles is a Car’s Steering Wheel. The Steering Wheel has a Greater Diameter than the Steering Column (Axle). A Small Force on The Steering Wheel Creates a Larger Force On The Axle and, therefore, A Larger Force On The Wheels Of The Car. However, The Greater Diameter Of The Steering Wheel Means The Driver’s Hands Travel Farther Than They Would If He Had Applied The Force To The Column Itself.
Wheel and Axles Sometimes Work in What Way, and Why?
Wheel and Axles Sometimes Work in the Opposite way because A Large Input Force On The Axle is Used to Gain an Advantage in Distance.
What do Gears used in Combination Form?
When Gears are Used in Combination With One Another, They Form A Gear Train.
Depending on the Purposes of the Devices, Gears Work By What?
Depending on the Purpose of the Device, Gears Work either by Reducing The Input Force Required To Push Or Pull Objects
Pulleys can be Used in What Way?
Pulleys can be Used By Themselves As Single Pulleys or In Combination With Other Pulleys To Create a Pulley System.
What do Pulley Systems Contain?
Pulley systems can contain fixed and moveable pulleys.
What is a Fixed Pulley Attached to?
A fixed pulley is attached to a rigid, non-moveable structure at some point
What is a Moveable Pulley is NOT Attached to?
A Moveable Pulley is NOT Attached to a Fixed Structure