# Shared Flashcard Set

## Details

Science - Unit 4 - Topic 2
The Wheel and Axle, Gears, and Pulleys
30
Science
04/30/2018

Term
 Label winch diagram [image]
Definition
 [image]
Term
 Will the wheel or the axle turn further?
Definition
Term
 winch
Definition
 a small cylinder and a crank or handle.
Term
 wheel and axle
Definition
 two turning objects are attached to each other at their centres, and one causes the other to turn
Term
 gear
Definition
 rotating wheel-like object with teetharound its rim.
Term
 gear train
Definition
 A group of two or more gears
Term
 mutliplying gears Which gear turns the most number of times? Does the driven gear move faster or slower? Does this change the turning direction?
Definition
 followerfasterYes they are turning opposite directions
Term
 Reducing Gears:Which gear turns the most number of times? Does the driven gear move faster or slower? Does this change the turning direction?
Definition
 driverDriven is slowerThey are both turning opposite directions
Term
 Parallel Gears:Which gear turns the most number of times? Does the driven gear move faster or slower? Does this change the turning direction?
Definition
 they turn the same amount of timesThey turn at the same speed They all turn opposite.
Term
 sprocket
Definition
 toothed wheels that are connected by chain.
Term
 MA for sprockets and gears
Definition
 Speed Ratio= Number of driver gear teeth / Number of follower gear teeth
Term
 Give an example of a MA that would be a force advantage and one that would be a speed advantage.
Definition
 Force - 1< (more than one)Speed - 1> (less than one)
Term
 compound pulley
Definition
 one made up of several pulleys working together
Term
 fixed pulley
Definition
 attached to something that does not move
Term
 movable pulley
Definition
 attached to something else, often by a rope that goes around the pulley itself. you can lift and lower the pulley itself by pulling on the rope. The load may be attached to the centre of the pulley.
Term
 pulley
Definition
 a grooved wheel with a rope or a chain running along the groove.
Term
 What is the difference between two gears and two sprockets?
Definition
 Two gears are in contact.Toothed wheels are connected using a chain
Term
 Depending on where the load is attached on a wheel and axle what is the advantage?
Definition
Term
 Give an example of a MA that would be a force advantage and one that would be a speed advantage.
Definition
 Force - 1< (more than one)Speed - 1> (less than one)
Term
 compound pulley
Definition
 one made up of several pulleys working together
Term
 fixed pulley
Definition
 attached to something that does not move
Term
 movable pulley
Definition
 attached to something else, often by a rope that goes around the pulley itself. you can lift and lower the pulley itself by pulling on the rope. The load may be attached to the centre of the pulley.
Term
 pulley
Definition
 a grooved wheel with a rope or a chain running along the groove.
Term
 What is the difference between two gears and two sprockets?
Definition
 Two gears are in contact.Toothed wheels are connected using a chain
Term
 Depending on where the load is attached on a wheel and axle what is the advantage?
Definition
 [image][image]
Term
 A class two lever is like a wheel and axle where the load is attached where?
Definition
 [image]Class 3 -> load attached to the wheel[image] Speed Advantage (Effort force distance is less than load distance this requires more fore but less distance.)[image] Class 2 -> load attached to axle[image] Force advantage (effort froce distance is more than the load distance which makes the job easier (use less force))
Term
 how to calculate MA of wheel and axle (formula)
Definition
Term
 How to calculate TMA in pulleys
Definition
 number of ropes being utilized by the pulley system (fixed first = 1 movable first = 2 movable not first =1)
Term
 How to calculate AMA in pulleys
Definition