Channel: Bruce Yeany

Category: Education

Description: This escapement wheel is a good example of showing how simple machines work together in the performance of a task, in this case turning a flywheel. I have found that students have a natural curiosity to explore these types of devices and are very interesting in learning more about concepts such as energy, work, forces, friction, and mechanical advantage of simple machines as they are in operation. I've included some other devices and ideas that I've also found to be good teaching tools. Here is a list of the Videos of other devices shown during presentation Cardboard ramp walkers youtu.be/kx-1RuBoSqs Combination lock. youtu.be/MImPhJ7bpCQ Trebuchet youtu.be/zhxYe4vIDH0 Trebuchet youtu.be/qC6RJxFEMfY Reciprocating air engine hand powered. youtu.be/pP8dwWxjoFs Reciprocating air engine compressed air powered youtu.be/KkpMrLXwsks Toy and machine dissection. youtu.be/ZqbtCTdTnZE Flag waving machine youtu.be/HDZqXy3PIqo Simple air engine. (not shown) youtu.be/o58Q5GFYIuo Simple and compound pulleys (not shown). youtu.be/ebwdFQB-5Fg Lever toy (not shown) youtu.be/uq93jczijeo Rubber band powered car. (not shown) youtu.be/8mmL4XGvDZk Questions 1.Draw a flow chart that follows possible energy types from the with origin, to power the device, and ending with the final form. 2.Identify each simple machine and if it has a mechanical advantage. 3.What was the purpose of having the weight supported by two strings instead of a single line? 4.Identify how the force changes as it progresses through device. 5.Identify the class of lever for the locking tooth lever, how does the class change as it is in operation? 6.Identify the pivot point, effort and resistance of the lever. Identify the class lever is the whole pendulum? 7.If we cut off the top part of the pendulum, it would still act as a lever, identify the class, the fulcrum, effort, and resistance is the upper section of the pendulum were not attached to the wheel 8.Identify the pivot point, effort and resistance of the lever with the stop tooth. 9.How does the force change due to the size difference between the escapement wheel and the wheel with the applied force? 10.What would be the effect of changing the size of the wheel that the string is wrapped on? How would this effect the force on the escapement? 11.Why do the extensions on the winding wheel make it easier to turn? 12.What is the effect of applying force near the hub on the flywheel? 13.Verify the change in force using a spring scale for the weight of the force applied to the escapement wheel. Determine the ideal measurements versus what was found and explain the differences. music used in video. Apple iMovie free file. carousel video clips used in video Piano escapement anamationfor pianoworld.com CC Anchor escapement created by Chetevorno CC Lever escapement created by Mario Frasca CC Grasshopper escapement, developed by John Harrison CC Coaxial escapement developed by Adithyamic gaming..