What is a good and easy way to compute and/or measure the force of a hammer blow, not using any fancy or specialized equipment?
If the hammer is swung by hand through an arc, it is not obvious to me how to measure the speed the hammer will be when it strikes the metal.
Also, when the hammer strikes the metal, the heavier it is, the more force there will be persistent and the less rebound. Also, the smith may use what is called a "dead blow" hammer to reduce the rebound. Thus, measuring the force is not just a question of the instantaneous force of the hammer, but how much it "presses" after that first instant, its impetus so to speak.
Now, one idea I had was to use a teeter-totter. You could place a heavy weight on one end of the teeter-totter and then hit the other other with the hammer and see how far it moved. Of course, what will happen is that when the hammer hits the pad, the teeter totter will accelerate, reach a peak, then decelerate, and the profile of this curve of acceleration will be the measurement of the instantaneous force of the hammer over time. Perhaps this could be measured by an accelerometer, but it is hard to see how to make the measurement with no special instrument.
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