Show:
Work
Incline Plane
Lever
Wedge
Simple Machines
100
What is the formula for work?
work=force x distance
100
Explain what an inclined plane is.
An inclined plane is a flat sloped surface.
100
What is the fixed point that a lever pivots (rotates) around called?
The fixed point that a lever pivots around is called a fulcrum.
100
Explain how you determine the mechanical advantage of a wedge.
The mechanical advantage of a wedge is determined by dividing the length of the wedge by its width.
100
What are the two types of pulleys?
Two types of pulleys are a fixed pulley and a movable pulley.
200
When is work done?
Work is done when the object moves in the same direction in which the force is exerted. (applied)
200
Explain what the input force that you use on an inclined plane.
The input force is the force that you would use to push or pull an object on an inclined plane.
200
What are the three classes of levers?
The three types of levers are First-class levers, Second-class levers, and Third-class levers.
200
Finish the statement. "The longer and thinner a wedge is.....
The greater it's mechanical advantage.
200
On a wheel and axle the object with the largest radius is called what?
A wheel
300
When you carry an object do you exert a upward or downward force?
A upward force
300
Finish the statement. An inclined plane allows you to....
An inclined plane allows you to exert an input force over a longer amount of distance.
300
What is a wedge?
A device that is thick at one end and tapers to a thin edge at the other end.
300
When hammering a nail into a piece of wood, what holds the screw into the wood?
Friction
400
What is the SI unit for work?
Joules
400
When pushing things on an inclined lane you need..
less force