mechanical advantage
the ratio of the force exerted by a machine to the force applied to it
NOTES:
You can determine the ideal mechanical advantage of an inclined plane by dividing the length of the incline by its height.
wheel and axle
hoist so arranged that a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with the wheel
NOTES:
There are six basic types of simple machines: the inclined plane, the wedge, the screw, the lever, the wheel and axle and the pulley.
simple machine
a device for overcoming resistance at one point by applying force at some other point
NOTES:
There are six basic types of simple machines : the inclined plane, the wedge, the screw, the lever, the wheel and axle and the pulley.
inclined plane
a simple machine for elevating objects; consists of plane surface that makes an acute angle with the horizontal
NOTES:
There are six basic types of simple machines: the inclined plane , the wedge, the screw, the lever, the wheel and axle and the pulley.
pulley
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
NOTES:
There are six basic types of simple machines: the inclined plane, the wedge, the screw, the lever, the wheel and axle and the pulley .
wedge
something solid that is usable as an inclined plane (shaped like a V) that can be pushed between two things to separate them
NOTES:
There are six basic types of simple machines: the inclined plane, the wedge , the screw, the lever, the wheel and axle and the pulley.
screw
a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole
NOTES:
There are six basic types of simple machines: the inclined plane, the wedge, the screw , the lever, the wheel and axle and the pulley.
fulcrum
the pivot about which a lever turns
NOTES:
The fixed point that a lever rotates about is called the fulcrum .
lever
a simple machine that gives a mechanical advantage when given a fulcrum
NOTES:
There are six basic types of simple machines: the inclined plane, the wedge, the screw, the lever , the wheel and axle and the pulley.
friction
the resistance encountered when one body is moved in contact with another
NOTES:
You can increase the efficiency of an inclined plane by decreasing friction .
wedge
