PPT-Rearranging Mechanical Advantage Equation and teach examples

Learning Objectives I can mathematically rearrange the mechanical advantage equation I can calculate mechanical advantage using the formula Actual Mechanical Advantage AMA The ratio of the output force to the input force in a machine Measuring the actual forces on the machine. Work & Machines. What is work?. Work is done when a force causes an object to move in the direction of the force.. Transfer of kinetic energy. Applying a force does NOT always result in work being done.. What do simple machines do for us anyway?. There are four ways that a machine helps us to do work.. Transfers our effort force from one place to another. Ex: seesaw. Multiply your effort force. Ex: crowbar. and. Mechanisms. Pulleys. A pulley wheel is a mechanism which helps move or lift objects.. . pulley. Exercise machine. Pulleys. Parts of a Pulley System. Direction of Force. Notice that the pulleys change the direction of the applied force. . Mathematical formulas that involve exponents, logarithms, powers, and roots have constraints on . the values . that can be assigned or associated with two or more variables. Real-world formulas . involving measurements . When you enter this classroom, immediately do the following:. Take your seat.. Turn off all electronic devices and place in backpack.. Take out all necessary materials (planner, binder, pencil) and place back pack on floor under desk.. 14) explain the relationship between work and power (using narrative and mathematical descriptions) and apply to realistic situations (GPS, HSGT) (SCPH_C2005-14). 14a) calculate the work on a body by constant force. Chapter 14 Section 3. Mechanical Advantage. The . mechanical advantage. of a machine is the number of times that the machine increases an input force. Suppose a nut is in a nutcracker at position A . Can you place the numbers 1-8, one in each box, so that no two consecutive numbers touch?. Rearranging Formulae and Simultaneous Equations 8-11-16 . For the formula . Types of Machines. All machines are made from 6 simple machines – lever, inclined plane, wedge, screw, wheel and axle, and pulley. . Examples are screwdrivers as a . lever, . ramp is an inclined plane. We are going to look at each simple machine. . Device Construction. © 2012 Project Lead The Way, Inc.. Principles of Engineering. Presentation includes: instructions for building a simple machines device and measuring mechanical advantage. Base Equipment. . 1. . A crate of bananas weighing 3000 N is shipped from South America to New York, where it is unloaded by a dock worker who lifts the crate by pulling with a force of 200 N on the rope of a pulley. What is the actual mechanical advantage of the system? . 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. . 2.1 Lever systems, examples of their use in activity and the mechanical advantage they provide in movement. Task 1 Thinking of every day situations, how many examples of levers can you think of? ** 14-3 Mechanical Advantage and Efficiency Answer on a separate sheet of paper Objectives: 1. How does the actual mechanical advantage of a machine compare to its ideal mechanical advantage? 2. Why is the efficiency of a machine always less than 100 percent?