Asked by jeffery
Please describe a constant in an experiment.
Answers
Answered by
Damon
something that does not change. For example it might be the ratio of weight to mass on earth.
Answered by
Samantha
Could that really be an experiment?
Answered by
Damon
Sure
F = m a
on a flat horizontal greasy table pull an object with a spring and measure the force and acceleration
then mass * a = measured force
or mass = measured force/measured a
now hang the mass from the same spring and measure the force
we know the mass from our earlier experiment
so
measured Force = weight = mass * something
that something will be the same for various sized and densities of objects as I repeat the experiment
we call it the constant g which on earth is about 9.81 m/s^2
On Moon that constant will be about one sixth of its value on earth
BUT
Newton says they are related by a more general constant, the Gravitational constant G
where
F = G M1 M2 / distance between^2
F = m a
on a flat horizontal greasy table pull an object with a spring and measure the force and acceleration
then mass * a = measured force
or mass = measured force/measured a
now hang the mass from the same spring and measure the force
we know the mass from our earlier experiment
so
measured Force = weight = mass * something
that something will be the same for various sized and densities of objects as I repeat the experiment
we call it the constant g which on earth is about 9.81 m/s^2
On Moon that constant will be about one sixth of its value on earth
BUT
Newton says they are related by a more general constant, the Gravitational constant G
where
F = G M1 M2 / distance between^2
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.