physics in hammering a nail
At some time in everybodys life they will probably hammer a nail into something but what you may never think about is how much physics there is when you hammer a nail. When you strike a nail you apply a force and even when you hit it hard the nail applys the same force back on the hammer as the hammer did to the nail. this may be weird to think about. In order to transfer the most energy from the hammer to the nail you must hit it right on the head or some of the energy may be lost. also depending on how dense the wood is there may be more or less friction acting on the nail when it is driven into the wood. if it is more dense then it will have more friction and you will have to apply a larger force to transfer the most energy and drive the nail further.
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