Categories of Force (There are only 2)
Types of Force (There are 4)
Bonus points
100
What is force?
A force is a push or pull acting on a structure!
100
A rubber band being stretched between two fingers is what type of force?
What is: Tension, the rubber band is being pulled from both ends.
200
What category of force is this:
A person pushes on a door to open it.
What is: External Force
200
Luke steps on an empty pop can and crushes it, what type of force is this?
What is: Compression, the force is squeezing the can together from the outside.
300
What category of force is this?
A bridge’s cables pull down on the bridge deck, holding it together and preventing it from bending
What is internal force
300
Connor twists a paper towel tightly until it begins to tear apart, what force is this?
What is Torsion: the force is twisting the material.
400
Classify ALL of the forces acting on the plane: (Hint there are two)
Strong winds push against the wings of an airplane while it’s flying. The wings bend slightly but do not break.
What is: The wind pushing against the plane is external force and the metal bending is internal force.
400
Avalyn uses a large pair of scissors to cut through a piece of cardboard.
What is: Shear: The blades push on opposite sides on the cardboard, causing the cardboard layers to split.
500
Categorize all of the forces acting in this situation:
A suspension bridge carries heavy traffic across a river. On a windy day, vehicles, gravity, and gusts of wind all act on the bridge at once. The bridge’s cables and beams stretch to hold the bridge up under all this force.
What is: windy, vehicles, gravity are external forces and the beams stretching are internal forces.
500
Name all 4 types of force acting in this situation:
Imagine a playground swing set on a windy day. The heavy metal frame pushes down on the ground. Malcolm and Vann swing back and forth, and the chains stretch as they swing. The swings and chains twist a little when the wind blows. The bolts holding the swings and frame bend slightly as the parts move in different directions.
Compression: At the bottom of the metal frame where it presses down on the ground.
Tension: In the chains holding the swings as they are stretched when kids swing.
Torsion: In the swings or chains as they twist slightly while moving.
Shear: In the bolts and joints where parts bend while the swings and the frame move in different directions.
500
“The fifth type of force, what is it? Using as much detail as possible, explain it, you must.”
What is: The force, that influences all forms of life, used by the Jedi and the Sith and created by Midiclorians. It includes the light and the dark side.