A belt and pulley system is characterized by
ANSWER :
two or more pulleys in common to a belt.
What does a belt and pulley system allow for?
ANSWER :
mechanical power, torque, and speed to be transmitted across axles
How is mechanical advantage realized?
ANSWER :
if the pulleys are different diameters
what is a pulley?
ANSWER :
a wheel on an axle or shaft that is designed to support movement and change of direction
of a cable or belt along its circumference
Why are pulleys used?
ANSWER :
lift loads
apply forces
trasmit power
What is usually the drive element of a pulley?
1
, ANSWER :
rope, cable, belt or chain that runs over the pulley inside the groove
Pulleys are assembled to form what
ANSWER :
a block and tackle in order to provide mechanical advantage to apply large forces
rope and pulley systems (block and tackle) are characterized by what?
ANSWER :
the use of a single continuous rope to transmit a tension force around one or more pulleys
to lift or move a load
the rope may be a light line or a strong cable
What is the mechanical advantage of a rope and pulley system if it does not dissipate or
store energy?
ANSWER :
the number of parts of the rope that act on the load
What is a lever?
ANSWER :
a machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum
How do levers work?
ANSWER :
amplifies an input force to provide a greater output force, which is said to provide leverage
what is the mechanical advantage of a lever?
2
ANSWER :
two or more pulleys in common to a belt.
What does a belt and pulley system allow for?
ANSWER :
mechanical power, torque, and speed to be transmitted across axles
How is mechanical advantage realized?
ANSWER :
if the pulleys are different diameters
what is a pulley?
ANSWER :
a wheel on an axle or shaft that is designed to support movement and change of direction
of a cable or belt along its circumference
Why are pulleys used?
ANSWER :
lift loads
apply forces
trasmit power
What is usually the drive element of a pulley?
1
, ANSWER :
rope, cable, belt or chain that runs over the pulley inside the groove
Pulleys are assembled to form what
ANSWER :
a block and tackle in order to provide mechanical advantage to apply large forces
rope and pulley systems (block and tackle) are characterized by what?
ANSWER :
the use of a single continuous rope to transmit a tension force around one or more pulleys
to lift or move a load
the rope may be a light line or a strong cable
What is the mechanical advantage of a rope and pulley system if it does not dissipate or
store energy?
ANSWER :
the number of parts of the rope that act on the load
What is a lever?
ANSWER :
a machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum
How do levers work?
ANSWER :
amplifies an input force to provide a greater output force, which is said to provide leverage
what is the mechanical advantage of a lever?
2
