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24 terms

Chapter 12; Work and Energy

STUDY
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MA > 1
increase output force
MA < or =
change direction of force
simple machine
one of the six basic types of machines, which are the basis for all other forms of machines
lever and inclined plane
two catagories of machines
lever
rigid arm that pivots on a fulcrum (pivot point)
pulley
modified lever around fulcrum
wheel and axle
large pulley which acts a s a wheel attached to a rod
inclined plane
ramp; multiplies and redirects force
wedge
two inclined planes back to back
screw
inclined plane wrapped around a cilandrical post
energy
the ability to do work
kinetic or potential
all types of energy can be classified as
kinetic energy
energy due to motion
potential energy
stored energy
1/2mv²
KE
KE
1/2mv²
mgh
PE
PE
mgh
law of conservation of energy
energy cannot be created nor destroyed ONLY tansformed from one type to another
1
MA of a fixed pulley
2
MA of a moveable pulley
3
MA of a block and tackle
sound, light, thermal
3 types of energy in a lightbulb
elastic, electric, chemical
3 types of energy