PhySci Chapter 14 Question Preview (ID: 41852)


Ch. 14. TEACHERS: click here for quick copy question ID numbers.

an arrangement of fixed and moveable pulleys
a) block and tackle
b) fulcrum
c) pitch
d) wedge

any reduction in an effort force will be paid for by an increased distance through which the force must act
a) distance principle
b) efficiency
c) mechanical advantage
d) resistance

the percent of work input returned as work output
a) efficiency
b) mechanical advantage
c) resistance
d) distance principle

the force applied to a simple machine to make it work
a) effort
b) work
c) power
d) efficiency

the fixed point about which a lever turns
a) fulcrum
b) pitch
c) screw
d) wedge

a slanted surface used to raise objects
a) inclined plane
b) lever
c) pulley
d) block and tackle

a rigid bar capable of turning about a fulcrum
a) lever
b) wedge
c) screw
d) pitch

the amount by which a machine magnifies effort (or force)
a) mechanical advantage
b) distance principle
c) resistance
d) efficiency

the distance between two adjacent threads on a screw
a) pitch
b) effort
c) work
d) efficiency

the amount of work done in a given period of time
a) power
b) effort
c) efficiency
d) resistance

a modified lever consisting of a rope that moves around a grooved wheel
a) pulley
b) fulcrum
c) inclined plane
d) screw

the force against which a simple machine works; often the weight of an object being moved
a) resistance
b) effort
c) mechanical advantage
d) power

an incline plane wrapped around a cone or cylinder
a) screw
b) fulcrum
c) block and tackle
d) wedge

two inclined planes conected back-to-back
a) wedge
b) block and tackle
c) screw
d) pulley

the product of a force applied on an object and the distance the object moved
a) work
b) power
c) effort
d) pitch

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