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it does work for round or hunched over backs
yes, a watch is a compound machine because the gears in a watch that make it work are a wheel and axle because they spin in a round formation. :)
you hit your bum violently on a drum. no specific drum is required.
hit it
you have to get a drum machine, or music software (like GarageBand). Some electric keyboards have drum kits as well. To record and save your work, the easiest way is to connect your equipment to a computer and record it. there's more to it, but that's the basic formula.
There isn't a well-known biography solely focused on James King, the inventor of the washing machine. However, you can find information about him and his work in books and articles about the history of washing machines and household appliances.
The paper rotates on a drum under the pen while the pen moves across the drum.
Better off purchasing a new master cylinder or a re-manufactured. They are not expensive and all the machine work is done.
The work done by a machine is called work output
repelsteeltje
As a milling machine uses round cutters, misalignment of the head would leave the base of a key way or a machined surface concave.
Machine work