David Baszucki

I founded an educational software company called Knowledge Revolution. We had the first fully animated physics lab on the computer. You could take ropes, pulleys, balls and anything else you'd use in your physics textbook and the program would allow you to build anything you can think of in a physics lab.

American Inventor

Jim Peebles

One thing that sticks in my mind is when I was a kid, and I had just learned to read, I came across one of my older sister's textbooks that explained compound pulley. I thought that was really neat, and I still do.

Canadian Scientist

James Prescott Joule

The height of the pulleys from the ground was twelve yards, and consequently, when the weights had descended through that distance, they had to be wound up again in order to renew the motion of the paddle.

English Physicist

Douglas Trumbull

I'm fearless when it comes to engineering and motors and gears and pulleys and glass and artwork.

American Director

Emma Bull

Coincidence is the word we use when we can't see the levers and pulleys.

American Writer

A pulley can make lifting easier by providing leverage, which reduces the force needed.

Mechanical Advantage

Pulleys are a common topic in physics, often used to demonstrate principles of mechanics.

Physics Context

Pulleys can be combined in complex systems to move large objects, like in cranes.

Compound Systems

 of painting one of our characters is holding a cell phone and if you look carefully added everything down to the screen and the metal band around the outside is all there if you look at the pulley system that the ropes connect to those are all miniature little pulleys and they all work and they all work in

Nat Geo’s Stop-Motion...

 and yet went in and risked his life in order to save Sergio. But all they had was a woman's handbag -- literally one of those basket handbags -- and they tied it to a curtain rope from one of the offices at U.N. headquarters, and created a pulley system into this shaft in this quivering building

Samantha Power: Shaking...

 So I... I left the hot pot of tea, a light, a pulley system so you could get yourself out of the water and I headed back a few hours up to Camp Three. I got there at about one in the morning and woke everyone up and said, "We have to go on a rescue."

Underwater Cave Diving:...

 fellow just seeking far and away out of his sight late in the afternoon ki pulley returned to deal with the second intruder the and nomads charged that key pulley to protect his prize but she chose to leave the gentlemen to square

Safari Live - Day 234 PIPE...

 pulley dealt with him accordingly this morning now one other male that we have just seen from a distant stayed back with his female here and have been meeting the whole day he pulley came and said about a hundred metres away from

Safari Live - Day 230 PIPE...

 It had some strings and pulleys and some springs. What I got is basically a gesture-interface device that actually acts as a motion-sensing device made for two dollars. So, here, whatever movement I do in my physical world

The thrilling potential...

 each pushed by perhaps a dozen men as well as horses these were connected to ropes that wound through pulley blocks up and down the lifting tower in this way a marble drum could be raised high above the streets below

Building an Ancient,...

 sophisticated machine it had a little pulley here and a rope on it and there kind of wet the best Johnson Space Center oh yeah very advanced great way I saw him grumbling around picking up this

Buzz Aldrin: Mission to...

 so Pheidias orders the construction of new pulleys. After recording the additional expense and supervising the construction all afternoon, he finally arrives at the sculpture workshop.

A day in the life of an...

 and he's brought some high-tech equipment so we'll just walk this piece of rope down it's two pulleys down at the bottom this is an electric lure it will test