Formulas
What is the formula for work?
W = F * D
What is a lever?
A simple machine that consists of a rigid bar that turns about a pivot part.
How many types of pulleys are there?
Three
What is an inclined plane that is wrapped in cylinder in a spiral pattern?
Screw
A simple machine that consists of a wheel with teeth?
Gear
What is the formula for power?
P = W/T
The point about which a lever turns or pivots is called what?
Fulcrum
Simple Pulley
What consists of two planes connected with an acute angle that is thick at one end and thinner at the other?
Wedge
What is a simple machine consisting of a wheel with a rod running through its axis that acts as the pivot point?
Wheel and Axle
What is the formula for IMA?
D in/ D out
What is the definition of torque?
Any force that tries to cause an object to rotate around its axis
Which type of pulley is where one end of a rope is attached to a fixed point and the other end is free?
Movable Pulley
What is a simple machine consisting of a flat surface whose opposite ends are at different heights?
What is the unit to measure work in?
Joule
F out/ F in
What is a moment arm?
Distance from the rotational axis to the location where the force is applied
Which type of pulley is a mixed structure consisting of a cable and at least one pulley wheel.
Block and Tackle Pulley
What is an example of a wedge?
Axe, knife, zipper, saw, pencil sharpener, and shovel
What is the SI unit for power?
W
What is the formula for efficiency?
(AMA/IMA)x100%
How many types of levers are there?
Three
What type of machine is a pulley?
Simple
What would make the MA of an inclined plane increase?
By lowering the degree of the slope
What is the term for the rate of doing work?
Power