Artwork: How pulleys work#2: With two wheels, it's as though the weight is hanging from two ropes (the two strands of the same rope on the left), and a pulley halves the lifting force you need. It's like lifting the weight with two ropes instead of one. But you now have to pul...
So how do you use it? The basic idea is simple: you press a key (1) and a lever attached to it (2) swings another lever called a type hammer (3) up toward the paper. The type hammer has the slug of metal type on the end of it. Just as the type is about to hit the page...
How does the angle affect the tension? Briefly describe the phenomenon of magnetization. What is a magnetic dipole? How is its strength defined? Give a reason why with a single fixed pulley, the velocity is always ...
Explain how to determine nodes and antinodes. Nodes and Antinodes: In a wave pattern, there are some points that seem to be stationary. These points, typically delineated as points of no displacement, are cited as nodes. There are different poin...
And once you are guiding, you are limited by centroid accuracy and response and - well - you are guiding anyway - so what is the benefit of encoders vs. tight guiding. It may mean "less work" for the guider - but who cares how much the guider works if the resulting fwhm is small...
How does an electronic computer manipulate all the mechanical nitty gritty in a hard drive? There is an interface (a connecting piece of equipment) between them called a controller. This is a small circuit that operates the actuators, selects specific tracks for reading and writing, and convert...
What is an electric kettle? How long does a kettle take to boil? How efficient is a kettle? How do instant hot water boilers work? How does a kettle know when to switch off? "The Mechanical Equivalent of Heat" Find out moreWhat is an electric kettle?Kettles...
apulleyand had a heavy on the end of it. When Joule released the weight (1), it pulled the string around the pulley (2), turned the axle (3), and made the paddle wheel spin, which heated up the water. He let the weight fall about 20 times so the water heated up enough for ...
In science, tools like this are called simple machines. And although you might think there's a big difference between a tiny little wrench and a huge great earthmover, exactly the same physics is at work in both. Let's take a closer look at tools and machines and how they work!
In my mind I'm imagining the lowest gear ratio beginning to turn, once a higher ratio has enough torque to overrun the lower gear, it does so and the lower gear freespins on its one way bearing, but then what happens when the next stage takes over and there is no one way bearing ...