just saying I'd never seen acceleration expressed in those units before.
You have, you just haven't done the algebra before
They are the same unit if you break N down and look at it. N/kg is considered gravitational force while m/s2 is an acceleration, but in reality they are the same thing and both work in any formula.
There are far easier ways to measure the acceleration due to gravity using Arduino
QuoteThere are far easier ways to measure the acceleration due to gravity using ArduinoHow is that "far easier" than using an accelerometer?
with a known string length L
Quotewith a known string length LA pendulum should be rigid.
a) Why? A swinging chain keeps time.
Why is the photogate method I described a far easier method of measuring gravity than an accelerometer?Well there was quite a bit of discussion about using cheap off the shelf accelerometers and I never did see anyone having a solution that actually did measure the acceleration due to gravity, without first assuming what it was to begin with. By using the photogates you can easily derive the solution for the acceleration due to gravity based on first principles, and not by assuming what the result is you are looking for. The photogate method is used in first-year physics labs everyday, I used to have my first year students derive the solution for homework, tests, or labs.
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