Simple Machines FIB Notes
What are simple machines?
Why use simple machines?
Simple Machines help us in 2 ways:
1. Change the _____________(magnitude) of force on an object.
2. Change the ______________ of the force.
3. A simple machine has ___________________ moving parts and use only the force
(effort) of a person to do the work.
4. They also give us something called ______________________________.
Inclined Planes:
From video – label the other two sides on each triangle:
Longer distance
Short distance
Longer distance
So the mechanical advantage is ___________________________________________________,
The less force needed ___________________________________________________________.
Advantage –
An inclined plane is ______________________ that makes it easier to move
objects up and down.
You can use an inclined plane to help __________________________________
__________________________________________________
__________________ is that you have to move it _________________________.
Inclined Plane Examples: ________________________________________________________
Pulleys:
From the video – fill in below
What is a basic pulley? ___________________________________________________
Label these pulleys:
The “trade off” of adding more pulleys is ______________________________________
Pulley Examples: ____________________________________________________________
Pulley vocabulary:
Pulley system – _________________________________________________________
Mechanical advantage - __________________________________________________.
Types of pulleys – _______________________________________________________.
Combined pulleys are also called “block and tackle” pulleys.
Types of Pulleys:
1. Fixed - A fixed pulley is ____________________________________________________
The wheel ____________________________________________________________
The effort _____________________________________________________________
You must also pull a length of rope _________________________ you wish to ______
the load.
2. Movable – The wheel of the pulley is _________________________________________
The ___________________________________________________________________
The effort needed _______________________________________________________
This pulley system provides ______________________________. However, the rope
must be pulled _________________________________ that the load is moved.
3. Combined – A combined pulley is ____________________________________________
These pulleys ____________________________________________________________.
The more pulleys, _____________________________________________ you need to
apply. These pulleys provide a mechanical advantage.
The ___________________________________________________________________
_______________________________________________________________________.
Mechanical Advantage:
Single fixed pulley has an MA = ___________
Moveable pulley has a MA = ______________
A pulley with 4 ropes (block and tackle or combined) has an MA = __________________.
An inclined plane also has a mechanical advantage: MA = ________________________.