Simple Machines
These are the two main groups of simple machines.
Inclined Plane and Lever
This force is the resistance that occurs between two surfaces.
Fricition
How do you measure distance?
Metres (m)
What is the formula for work?
Work = Force * Distance
What is the pivot point of a lever?
The Fulcrum
All forces have these two things:
Magnitude and Direction
How do you measure force?
Newtons (N)
How do you calculate ideal mechanical advantage?
How do you measure work?
Joules (J)
When is work done?
When doing a bicep curl, your arm becomes what kind of simple machine?
A lever
How do you calculate actual mechanical advantage?
Output/Input
How do you measure mechanical advantage?
2 part answer
No units, but it must be a whole number.
Why do we use simple machines?
To make work easier.
What is another way to write Joules (J)?
N*m
If I exert 250J moving a desk 50cm, how much force do I need?
500N