Simple Machines (Mark Twain Media, Inc. Publications)
equals net force/mass
Actual Mechanical Advantage
the ratio of the resistance force to the effort force
related to resistance and force. The ratio of the resistance to the effort force is called ideal mechanical advantage
Device invented to raise water
A compound machine made up of the wheel and axle and pulley
In a Block and Tackle System
pulleys can change the direction of a force and multiply the force. The block & tackle system consists of a fixed and movable pulley
screw is an inclined plane wrapped around a central point, or a winding inclined plane.
is an example of a lever that consists of a bar supported at only one end
a machine that works like a slingshot and is capable of launching heavy objects
When two or more simple machines work together to perform one task, (it becomes a compound machine)
A belt looped around two pulleys in a _________ __________ _____________ will cause the wheels to rotate in __________ directions
cross pattern arrangement, opposite
The gear on which the force is applied is the __________, and the other gear is the ________ _______.
driver, driven gear
Represented by the force that you apply to move a load (resistance)
Effort is sometimes referred to as
ability to do work
Using a _______ ______ ______, the force changes directions. The ______ is on one side of fulcrum, and the ________ are on the other side of the lever.
first-class lever, load, forces
is any push or pull in a particular directions or that which produces or prevents motion.
is a force that resists motion.
or pivot point is a fixed point.
When two or more gears are meshed together
combinations of different diameters are used to increase or decrease speed
are toothed wheels and axles
Ideal Mechanical Advantage (IMA)
is the ratio of the distance the effort force moves to the distance the resistance force moves
any gears between the driver and the driven gear
a device that allows for us to increase the height of an object without lifting it vertically