Pulley 1
What is pulley.
Change in direction that results from passing a rope through a pulley.
What is directional advantage.
Has a wheel that is attached to something above the load.
What is a fixed pulley.
Reduces the effort needed to lift a load or overcome resistance.
What is mechanical advantage.
Has a wheel that is attached to the load.
What is movable pulley.
Which pulley system does not provide a mechanical advantage?
What is a fixed pulley.
How many supporting ropes does a single-fixed/single-movable with the effort going up have?
What is 3 ropes.
Which direction is the effort being pulled in a single-movable pulley?
What is up.
If you want to lift a load 10 feet using a single-fixed/single-movable with the effort going up, how much rope do you need to pull?
What is 30 feet.
Which direction is the effort being pulled in a single-fixed pulley?
What is down.
How many pulleys are used in a single-fixed/single-movable pulley?
What is 2 pulleys.
Is there an advantage of using two pulleys at the same time?
What is yes.
How many supporting ropes in a single-fixed/single-movable pulley with the effort going down?
What is 2 supporting ropes.
The effort needed to lift a load in a single-fixed/single-movable pulley with the effort going up is __________as much as the effort needed to lift the load in a fixed pulley.
What is one-third.
Using a single-fixed pulley and you want to raise the load 5 feet off the ground, how much rope do you need to pull?
What is 5 feet of rope.
Which pulley systems will give you a mechanical advantage?
What is single-movable pulley, single-fixed/single-movable/effort down, and single-fixed/single-movable/effort up.
A single-fixed/single-movable pulley with the effort going down has how many ropes supporting the load?
What is 2 supporting ropes.
Which pulley system gives you the most mechanical advantage?
What is the single-fixed/single-movable with the effort going up.
A single-fixed/single-movable pulley with the effort going down has a load weighing 50 Newtons, how much effort is needed to lift the load?
What is 25 Newtons.
Using a single-fixed/single-movable pulley with the effort going up has a load weighing 30 Newtons, how much force is needed to lift the load?
What is 10 Newtons of force.
Which pulley system provides only a directional advantage?
What is a single-fixed pulley.
Which pulley system(s) provide a mechanical advantage of 2?
What is single-movable pulley and single-fixed/single-movable pulley with the effort going down.
Using a pulley system with 4 supporting ropes, how much force is needed to lift the load weighing 100 pounds?
What is 25 pounds of force.
Using a pulley system with 4 supporting ropes, how much rope do you have to pull to lift the load 50 feet?
What is 200 feet of rope.
Where are pulleys used in real-life?
What are flagpoles, window blinds, elevators, and cranes.