ILS Ch 14
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Work | apply force times distance, labeled in Joules
🗑
|
||||
| Power | labeled in watts or horsepower, work divided by time, rate of doing work
🗑
|
||||
| Machine | multiplies force, force and distance are inverse, can change direction of force
🗑
|
||||
| Work output | can not be greater than work input, increased by reducing friction or increasing work input
🗑
|
||||
| Mechanical advantage | output force divided by input force
🗑
|
||||
| IMA | problem, pulley
🗑
|
||||
| Friction | decreases efficiency
🗑
|
||||
| Efficiency | never 100%, always less, some input force always lost to friction, work output divided by work input
🗑
|
||||
| Inclined plane | increases distance, ramp
🗑
|
||||
| Wedge | 2 inclined planes, axe, as thickness increases IMA decreases
🗑
|
||||
| Wheel and axle | doorknob
🗑
|
||||
| Compound machine | includes more than one simple machine, bicycle
🗑
|
||||
| Force | only does work if it applied in the direction of the motion
🗑
|
||||
| Screw | inclined plane wrapped around a cylinder
🗑
|
||||
| Levers | 3 classes, gears are continuous levers
🗑
|
||||
| First class lever | fulcrum in middle
🗑
|
||||
| Second class lever | output force in middle
🗑
|
||||
| Third class lever | input force in middle, IMA always less than 1
🗑
|
||||
| Math problems | work, power, efficiency,
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
evroman
Popular Science sets