PPT-Simple Machines EQ: How do simple machines make work easier?

Why do we use machines Machines make doing work easier But they do not decrease the work that you do Instead they change the way you do work In general you trade more force for less distance or less force for more distance. What is a Simple Machine?. A simple machine has few or no moving parts.. Simple machines make work easier. Wheels and Axles. The wheel and axle are a simple machine. The axle is a rod that goes through the wheel which allows the wheel to turn. Tried to take a super heavy object up a flight of stairs ? WHAT HAPPENED. Example. Have you ever . Tried to cut a cake with out a knife?. Example. Have you ever . tried to unscrew a nut, bolt, or screw from something with your bare hands and discovered that it was just too tight to loosen even if you had a good grip? . A. 5. th. Grade Smarty Pants?. Simple Machines Song. A bar that turns against . an unmoving point is called a…. Wheel and Axel. Lever. Pulley. Wedge. Video. A bar that has an inclined plane wrapped around it is called a…. Simple Machines. A simple machine has few or no moving parts.. Simple machines make work easier.. With or without a simple machine the work is the same.. Also when simple machines are combined they can make complicated bigger machines.. WORK. Mechanical Advantage. Force. Effort. Efficiency. 1. Goals. Analyze the simple machines . qualit. atively and . quant. itatively in terms of force, distance, work and mechanical advantage. Be able to calculate mechanical advantage. Work is done when a force is applied through . a distance. Work input: the work that you do on a machine. Work output: the work done by the machine. Machines do not increase the amount of work done. Work output is never greater than work input.. Simple machine is a term used to describe certain parts and pieces.. A simple machine is an apparatus that is made of a small number of pieces and permits us to use more efficiently or more comfortably mechanical energy. It helps us reduce the necessary force to perform a task.. A simple machine is any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.. Simple machines are utilized to reduce the amount of force required to perform work, initiate or resist motion, break or split molecular bonds of solids, or keep two non-molecularly-bonded solid objects bound together.. Presented by: . Institute for Ergonomics. . The Ohio State University. Columbus, Ohio. Disclaimer: . This material was produced under grant number SH-20998-10-60-F-39 from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government. IPC Spring . 2014. Energy, Work, Power & Machines. 1. Energy. is the ability to do work. .  . Potential energy. – stored energy or energy due to position.  . PE=m g h . m. is mass (kg). g. 2. SIMPLE MACHINES - LEVER. A lever is a rigid bar that rotates around a fixed point called the fulcrum.. The bar may be either straight or curved.. In use, a lever has both an effort (or applied) force and a load (resistant force). . What is a machine?. A machine is simply a device that makes doing work easier. . Even a sloping surface can be a machine. . Using Machines. Mechanical Advantage. Even though machines make work easier, they don’t decrease the amount of work you need to do. . Housekeeper Managers: Improving Housekeeping Work using Ergonomics Presented by: Institute for Ergonomics The Ohio State University Columbus, Ohio Disclaimer: China Beijing International Construction Machinery, Building Material Machines, and Mining Machines Exhibition

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