Quiz Machines Flashcards
(37 cards)
Device that changes the force or increases the motion from work
Machine
Which is easier lifting a piano onto a truck that is 1.5 meters tall or using a ramp over a distance of 8 meters
using a ramp
What is the three-column system
work input / machine / work output
the column system of using a can opener
twisting / can opener / cutting into can
how is the MA of a pully determined
by how many supporting ropes it has
How is the MA of a wheel and axle determined
Radius of the wheel / radius of the axle
How is the MA of the Screw determined
distance between threads
How to find the MA of a wedge
length of blade / thickness
How to find the MA of an Incline Plane
length of plane / height of a plane
How to find the MA of a Lever
input arm / output armp
percentage of how much work put into a machine is related to how much work is done by the machine
Machine Efficiency
Equation for efficiency
(work output / work input) x 100
What does a mechanical advantage of over one mean
increase in force
Mechnical advangtage = 1
change dircetion
MA < 1
increases speed or distance
How to find MA
Distance / Distanceout or Forceou /Forcein
1st Class Lever
Fulcrum in middle
2nd Class Lever
Output in the middle or resistance
3rd class level
Input in the middle or effort
How to find level work
fin x din = fout x dout
ability to do work or cause change
energy
transferred from food to you
chemical energy
transferred from the sun
electromagnetic radiation
what is needed for motion to occur
energy
