Term
What is the SI unit of
1. Length?
2. Temperature?
3. Mass?
4. Force? |
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Definition
1. meters
2. Kelvin
3. kilogram
4. Newton |
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Term
| What is an inclined plane? |
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Definition
| a slanted surface used to do work |
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Term
| How can you find the IMA of an Inclined Plane? |
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Definition
Length divided by Height
L/H |
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Term
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Definition
| Two inclined planes put back to back to do work. |
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Term
| How can you find the IMA of a Wedge? |
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Definition
Length divided by Height
L/H |
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Term
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Definition
| An inclined plane wrapped around a cone or cylinder. |
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Term
| How can you find the IMA of a Screw? |
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Definition
Length divided by Height
L/H |
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Term
| What is the difference between a Screw and a Bolt? |
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Definition
Screw - inclined plane wrapped around a cone
Bolt - inclined plane wrapped around a cylinder |
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Term
| What does IMA and AMA stand for? |
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Definition
IMA - Ideal Mechanical Advantage
AMA - Actual Mechanical Advantage |
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Term
| How do machines make work easier? (3 things) |
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Definition
1. Increase Force
2. Increase Distance
3. Change Direction |
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Term
| What are the 8 types of levers? |
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Definition
1st class lever
2nd class lever
3rd class lever
fixed pulley
moveable pulley
block and tackle
wheel and axle
gears |
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Term
| If the IMA is greater than 1, then what does the machine do? |
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Definition
It increases the resistance.
It may change the direction. |
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Term
| If the IMA is equal to 1, then what does the machine do? |
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Definition
| It changes the direction of the resistance. |
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Term
| If the IMA is less than 1, then what does the machine do? |
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Definition
| It increases the distance (speed) or the resistance. |
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Term
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Definition
Force of the resistance divided by the Force of the effort.
Fr/Fe |
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Term
| On a wheel and axle, where you you apply the effort force? |
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Definition
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Term
| WHy is IMA always larger than AMA? |
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Definition
| Friction causes AMA to be smaller than IMA. |
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Term
| How does a 2nd class lever make work easier? |
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Definition
| Increases force of the resistance |
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Term
| How does a 3rd class lever make work easier? |
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Definition
| Increases distance (speed) of the resistance |
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Term
| How does a 1st class lever make work easier? |
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Definition
| Changes the direction of the resistance |
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Term
| How can you find the IMA of a Pulley? |
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Definition
| Count the number of supporting strands |
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Term
| How can you find the IMA of a Wheel and Axle? |
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Definition
Radius of the Wheel divided by the Radius of the Axle.
r of W/r of A |
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Term
{image:|}
What class lever does this represent? |
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Definition
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Term
| What is the SI unit of volume? |
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Definition
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Term
| What is the SI unit of pressure? |
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Definition
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Term
| What is the SI unit of force? |
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Definition
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Term
| What is the SI unit of work and energy? |
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Definition
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Term
| What is the SI unit of power? |
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Definition
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Term
| What is the SI unit of length? |
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Definition
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Term
| What is the SI unit of mass? |
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Definition
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Term
| What is the SI unit of time? |
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Definition
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Term
| What is the SI unit of temperature? |
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Definition
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Term
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Definition
measure of straight line
distance bewteen two points |
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Term
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Definition
| measure of matter in an object |
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Term
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Definition
| the amount of space an object takes up |
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Term
| Definition of temperature: |
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Definition
| measure of the average kinetic energy in an object |
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Term
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Definition
| period between two events |
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Term
| What are 3 similarities between speed and velocity? |
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Definition
1. Both measure Distance and Time
2. Both measure movement
3. Both are rates |
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Term
| What are 3 diffenrences between speed and velocity? |
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Definition
1. Direction
2. Direction in unit
3. Vector quanity |
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Term
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Definition
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Term
| What are 2 characteristics of a balanced force? |
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Definition
1. They don't change in motion
2. They are 2 equal forces in size, but opposite in direction |
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Term
| What are 2 characteristics of an unbalanced force? |
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Definition
1. They change in motion
2. They accelerate |
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Term
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Definition
| two surfaces moving together |
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Term
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Definition
| friction between surfaces that are stationary *NOT MOVING* |
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Term
| What is kinetic friction? |
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Definition
| friction between surfaces that are moving *MOVING* |
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