Levers and Pulleys in Translating Mechanical Systems

Simple Machines – Levers and Pulleys - UFBA

K'NEX Education - Intro To Simple Machines: Levers and Pulleys Set

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  • Put simply, a simple machine is a device that only requires a single force to do work. We are going to cover the basic ideas behind two of the most popular simple machines here: levers and pulleys.

    There are two commonly used elements, levers and pulleys, that are used to amplify forces or displacements. There is a direct proportionate tradeoff between increase in force and decrease in displacement (or vice-versa), but power is preserved (i.e., the power on the input side of one of these devices is equal to the power out). The behavior and modeling of these elements is the focus of this section.

  • When moving heavy objects, it is often easier to use a system of levers and pulleys to move what needs moving. Sure, straight up brawn and muscle might be able to get the job done, but most people are advocates of working smarter, not harder. That is where the simple machine, the lever and the pulley, come in.

    There are two commonly used elements, levers and pulleys, that are used to amplify forces or displacements. There is a direct proportionate tradeoff between increase in force and decrease in displacement (or vice-versa), but power is preserved (i.e., the power on the input side of one of these devices is equal to the power out). The behavior and modeling of these elements is the focus of this section.

    Week 1 to 3 - Levers
    How can a lever system make work easier?  What force caused that action? How is energy transferred through the system when you lift that load
    Week 4 & 5 - More Leverage
     How many ways can you arrange the fulcrum, effort, and load within a lever system?  What are the different classes of levers?  
    Week 6 to 8 - Pulleys 
    How much effort is needed to lift a load in a one pulley system?  What is the difference between a one pulley and two pulley system?  
    Week 9 & 10 - Pulleys at Work
    How can you predict the effort needed to lift a given load with the pulley system?  What other lever and pulley systems can you design? 

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    • K'NEX building set for learning about levers, pulleys, introduction to simple ...
    • Encourages fine motor skill, logic, following instructions, creativity
    • Learning about levers and pulleys is easier with hands-on construction
    • Build 8 models, one at a time - Seasaw, balance, wheelbarrow, hockey stick, ...
    • Explanations and lessons accompany each build
    • Learn how levers and pulleys can be used in different ways to make work easier
    • Educational concepts: Lever classes; fixed, movable, and combination pulley ...
    • Supports 2 students in grades 3 to 5
    • Includes 7 2-prong flat connectors, 6 2-prong angled connectors, 20 4-prong ...
    • Detailed instructions included
    • All items come in a sturdy plastic case
    • Curriculum Not included
    • High quality materials for exceptional learning experienc

    Tell me about your Make Do animation—you said it was inspired by personal experience? Everyone should go watch it right now.
    Make Do was a reflection on my final year at university. Strangely enough, our first project when we returned after the summer when I injured myself had an optional path about the nervous system. I decided that, to prove to myself and my peers that I had recovered from my injury, I would construct an elaborate mechanical cabinet with levers and pulley systems to illustrate a nerve relay system. Needless to say, this required engineering knowledge and skill way beyond that of an injured 20-year-old illustrator. I had loads of fun making it, but the outcome was an absolute disaster, none of it worked. I got a really bad grade and decided to stick to CGI and drawing, and that’s what that film is about.

levers and pulleys Car Pictures

Complete with easy-to-follow, illustrated instructions and detailed explanations for each mechanism you build, the K'NEX Education Levers and Pulleys set turns basic engineering into hands-on creative fun!