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Mechanical Comprehension
See title
16
Other
Not Applicable
12/20/2012

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Term
efficiency
Definition
the ratio between the work output and the work input. Formula used is (Wout)/(Win)
Term
vector
Definition
any physical quantity that requires both a direction and an amount of force (or magnitude)
Term
mechanical advantage
Definition
the ratio of load to effort
Term
first-class lever
Definition
In this type of lever, the pivot is between the effort and and the load
Term
second-class lever
Definition
In this type of lever, the load is between the pivot and the effort
Term
third-class lever
Definition
the effort is between the load and the pivot
Term
third-class lever
Definition
This lever has a mechanical advantage of less than one because it magnifies distance at the expense of force
Term
wedge
Definition
a double-inclined plane
Term
the ideal mechanical advantage of a gear
Definition
the ration of the teeth in the load gear to the number of teeth in the effort gear
Term
power
Definition
the rate at which work happens
Term
sliding friction
Definition
a force generated whenever two objects are in contact and there is relative motion between them
Term
direction of velocity
Definition
the direction of the force of friction on a moving object will always be directly opposite to what?
Term
torque
Definition
The greater the difference between the number of teeth in two meshed gears, the greater the what?
Term
the smallest
Definition
in any arrangement of connected pulleys, what will turn faster, the largest or the smallest?
Term
specific gravity
Definition
the weight of a liquid compared with the weight of the water
Term
float Y(the liquid with the higher specific gravity will cause the float to rise higher)
Definition
If floats X and Y are measuring the specific gravity of two different liquids and float Y is sitting higher in its liquid that float X is in its liquid, which liquid has the higher specific gravity?
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