Forces
What is a force?
A push or a pull
When an object is still, the force acting on it are considered to be...
Balanced
An inclined plane that spirals around a central shaft
Screw
Tell me the definition
A stiff bar that rests on a fulcrum
This slows down moving objects
Friction
A force is measured in this
Newtons
To stop moving an object, you need to apply a force in the ...
Opposite direction
A grooved wheel and a rope
Pulley
Name the 3 parts in a lever
Fulcrum, Load, Effort Force
This type of force holds up metal objects
Magnetic Force
Name the 4 things a force can cause an object to do ...
Start, stop, change speed, direction
This can help reduce friction
Oil, grease, etc.
A wheel is attached to a small axle in this simple machine
Wheel and Axle
This class lever has the Effort Force in the middle
3
Wind is an example of a
Contact force
This type of force is through physical contact
Mechanical Force
A lever rests on a...
Fulcrum
Sloped surface
Inclined Plane
This class lever always moves a shorter distance than the effort force
2
Objects begin to move if they are (starts with a U)
Unbalanced
Name the two types of forces (not push or pull!)
Contact and Non-Contact
A simple machine creates a ________ when its output is greater than the effort force.
Force advantage
A machine with thin end and a thick end
Wedge
The load moves in the opposite direction as the effort force and the fulcrum is in the middle
class 1
These make life easier for us
Simple Machines