Mechanical Systems Flashcards
simple machines (name 5)
inclined plane, gears, wheel and axle, pulley, levers
inclined plane
a ramp or slope for reducing
the force needed to lift something
gears
a rotating wheel-like device with teeth around its rim
wheel and axle
a machine consisting of two turning objects
attached to each other at their centres.
One object causes the other to turn.
hydraulics
the study of pressure in liquids
pneumatics
the study of pressure in gases
pulley
a wheel with a grooved rim to guide a rope or
chain that runs along the groove;
used to transmit or change direction of force
Lever
a machine consisting of a bar that is free to rotate around a fixed point, changing the amount of force that must be exerted to move an object
how do machines impact people and society
..
What relationship is there between the
piston and the wheel of the device?
the piston transmits kinetic energy to the wheel
What is a subsystem?
a simple machine that is part of a larger system
screw
wedge
..
mechanical advantage formula (force)
mechanical advantage =
Load force
———————
Effort force
or
MA=FL/FE
mechanical advantage formula (for levers)
MA levers =
Length of force arm
———————————
Length of load arm