Pulley Mechanical
Advantage
Advantage
what is the most common pulley you see being used?
Anything pulley that is named.
what role do gear trains play?
They serve as a means to change the speed, direction, and torque of rotational motion efficiently.
If the effort force applied to a pulley system is 30N and the resistance force to be lifted is 150N, what is the mechanical advantage of the pulley system?
150N/30N=5
In a simple lever system, where would you typically find the fulcrum located in relation to the load and the effort?
In a simple lever system, the fulcrum is typically located between the load and the effort.
If the diameter of the input gear in a gear train is 8 inches and the diameter of the output gear is 4 inches, what is the gear ratio?
the gear ratio is 2:1.
Do all pulleys make work easier?
Fixed pulleys like flag pole, when you pull down on the rope, the direction of force is redirected by the pulley, and you raise the flag.
What is the difference between a gear and a gear train?
A gear train is two or more gear working together by meshing their teeth and turning each other in a system to generate power and speed.
A ramp is used to life a crate weighing 500N. If the effort force required to push the crate up the ramp is 100N, what is the mechanical advantage of the ramp system.
500N/100N=5
Can you provide an example of a lever system where the fulcrum placement allows for a greater mechanical advantage?
An example of a lever system where the fulcrum placement allows for a greater mechanical advantage is a seesaw or teeter-totter.
In a pulley system, if the diameter of the driving pulley is 12 centimeters and the diameter of the driven pulley is 6 centimeters, what is the gear ratio?
the gear ratio is 2:1.
how many pulleys are there?
fixed pulleys, movable pulleys, compound pulleys and a complex pulley.
How do gears increase speed?
The smaller gear makes more revolutions in a given time, rotating at a faster pace than the larger gear.
In a wheel and axle system, if the radius of the wheel is 20 cm and the radius of the axle is 5 cm, and a force of 50N is applied to wheel, what is the mechanical advantage of the system?
20cm/5cm=4
When using a pair of scissors, where is the fulcrum located relative to the blades and the handles?
In a bicycle, if the diameter of the front chainring is 40 centimeters and the diameter of the rear sprocket is 20 centimeters, what is the gear ratio?
the gear ratio is 2:1.
How many pulleys are needed to lift a heavy load of 200 ibs?
More than 1 pulley.
If the first gear has 20 teeth and the second gear has 40 teeth, what is the gear ratio between them?
the gear ratio is 2:1
A lever is used to lift a heavy object. if the effort arm is 50 cm long and the resistance arm is 200 cm long and an effort force of 100N is applied to the effort arm, what is the mechanical advantage of the lever system.
200cm/50cm=4
When using a hammer to remove a nail, where does the fulcrum lie in relation to the nail and the hand gripping the hammer?
When using a hammer to remove a nail, the fulcrum is typically where the nail contacts the surface being struck.
In a wind turbine, if the diameter of the rotor is 80 meters and the diameter of the generator shaft is 4 meters, what is the gear ratio?
the gear ratio is 20:1.
Which pulley can lift a load faster?
Compound System because it combines the benefits of lightening the load and changing the direction of the force.
What is the difference between simple and compound gear train?
In a simple gear train, some of thegears are connected to the same shaft. In a compound gear train, eachgear has its own shaft for rotation.
A gear system is used to lift a load of 600N. If an effort force of 150N is applied to the input gear, what is the mechanical advantage of the gear system?
600N/150N=4
In a stapler, where is the fulcrum positioned concerning the staple and the pressing mechanism?
In a stapler, the fulcrum is located between the pressing mechanism and the staple.
the gear ratio is 2:1