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S8P3

Simple Machines

QuestionAnswer
A ramp is an example of a simple machine called a inclined plane
When you raise or lower a flag on a flagpole, you are using a wheel and axle
A screw is actually a _________wrapped around a axle. wheel
Work is being done when You apply a force to an object.
The center of a seesaw is this part of a lever. Fulcrum
Which of the following is NOT a simple machine? A. doorknob B. see-saw C. bullet D. shovel
What is a Lever? A bar that pivots on a fixed point called a fulcrum
What is a first class lever? A lever that changes the direction of the input force.
What is a second class lever? A lever that stays true to the input direction.
What is a third class lever? A lever whose force is between the fulcrum and the load.
What is a pulley? A simple machine that has a grooved wheel that holds a rope or a cable
What is a Wheel and Axle? A simple machine consisting of two circular objects of different sizes.
What is a inclined plane? A simple machine that is a straight, slanted surface.
What is a wedge? A pair of inclined planes that move.
What is a Screw A inclined plane that is wrapped in a spiral around a cylinder.
What is a compound machine A machine that has two or more simple machines.
What is mechanical efficiency? A comparison of work output with the work input
Created by: DaSwagPrince!2
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