Mechanical Engineering 150 Quiz 2 Study Guide (UWM)
Terms in this set (18)
Gears can be used to...
change torque, change rotational direction, change speed
For gears to mesh what must be the same?
diametral pitch and pressure angle
fixed axle, used to redirect effort, has mechanical advantage of 1
free axle, used to multiple effort, has mechanical advantage of 2
utilizes both fixed & movable pulley, has mechanical advantage greater than 2
block and tackle
multiple pulleys on one axle, has mechanical advantage greater than 2
What will influence an object's linear motion?
What will influence an object's rotational motion?
Law of Conservation of Energy
energy can neither be created nor destroyed
Two Types of Energy
potential and kinetic
efficiency of a system
the ratio of the amount of work out of the system divided by work put into the system
Do inclined planes reduce the amount of work required?
no, they reduce the force you need to apply by increasing the distance the body needs to move
First Class Lever
fulcrum is always between effort and load (LFE)
Second Class Lever
fulcrum is at end and load is between fulcrum and effort (ELF)
Third Class Lever
fulcrum is at end and effort is between fulcrum and load (FEL)
A wheel and axle work like a rotating lever
Idler gear does what?
reverses gear rotation
inclined plane equation
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