If you want to transport objects to a higher height or want to test out physics, build an elevator pulley. Pulleys are simple wheels with grooved rims that are pulled by a rope. Pulleys are useful for elevators because they lift more than their weight. The longer the string length, the m...
If you want to lift a really heavy weight, there’s only so much force your muscles can supply, even if you are the world’s strongest person. But use a simple machine like a pulley to multiply the force your body produces. The object lifted by a pulley is called the load. The forc...
If you have a single wheel and a rope, a pulley helps you reverse the direction of your lifting force. So, as in the picture below, you pull the rope down to lift the weight up. If you want to lift something that weighs 100kg, you have to pull down with a force equivalent to 10...
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Pulley: Adds a rope to a wheel which allows you to change the direction of a force. Think flagpole or window blinds. Inclined plane: A hard, flat surface with one end higher than the other. Aids in moving objects. Think slide. Wedge: Two inclined planes put together and helps push...
How to Build an Ergonomic Cycle Truck: Design I got tired of falling over when climbing off my old bike fully loaded with cargo. I looked for one that had all the things that I needed, like easy dismount , full MTB gears (for climbing hills with carg
How to Build a Treehouse: This particular design requires two or three trees (or branches) in close proximity. It was made over the course of several weekends using new, pressure-treated wood for the support structure and floor and an old fence was recyc
The science behind a catapult is physics. A catapult launches with stored energy. The energy used with catapults includes tension, torsion, and gravity. Related Read: How to Make a Pulley with Kids What Materials Do You Need to Build a DIY Catapult? rubber bands craft [aka “popsicle”] ...
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T hekey was to use a pulley system that would magnify the applied force. So they rigged up atent-shaped scaffold(支架)directly above thetip of the horizontal column, with pulleys(滑轮)suspended from the scaffolds aper(顶点).The idea was that as one end of the column rose, the base ...