Help Physics finding M Mass

[gotnowheels]

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I'm having a hard time with finding mass.

As far as I know, our weight is = ma where "m" is our mass and "a" our acceleration due to gravity. Our acceleration is 9.8 m/s squared. Now how do we determine the mass?

I know 3 ways to calculate mass.

1 is that acceleration of gravity (9.8m/s squared) and your weight is already given. There for you have m = N/a, where N varies on which planet you're in since weight is based on the acceleration of gravity, which is based on the planet's mass.

2 Using the formula m=f/a where f = force and a = acceleration

3 using the formula m = density * volume.

What if:

In the formula m = N/a, N = ?. Let's say that you're trying to get the mass of an object located in a vacuum space. Therefore your weight is technically none existent. How do you calculate your mass? If we are going to consider that your mass calculated with the presence of gravity would always be the same in the absence of gravity? If yes then it is safe to safe that if I weight 10Kg on earth then I would weight the same on an planets. If that the case then the formula in w=ma, "a" which is the acceleration should always be constant, which of course violated the law of physics. We can try m=f/a, where "a" is not bound to acceleration due to gravity, but what about "f" or force? Doesn't that require mass as f=ma? Lastly we can try density*volume, where "p" or density is m/u where "m" mass and then "u" unit. So I still have to calculate the mass per unit. So is there anyway that we can calculate mass of an object?

In the recent discovery of the Higgs, there's no equation that I can find where we can calculate mass. Is there any physicist in here that can shed light to my dilemma I would be eternally grateful.

[alwaysdrunk]

wla nimo gitry ang kang einstein? E=mc squared?

every "physical" system has an equal proportion of energy and mass ingon ni einstein.

mura sd kog true ani dah haha

[gotnowheels]

wla nimo gitry ang kang einstein? E=mc squared?

every "physical" system has an equal proportion of energy and mass ingon ni einstein.

mura sd kog true ani dah haha

di siya ma apply boss kay ang mass given naman ngari nga equation, what if m=?

[alwaysdrunk]

e=mc squared is an equation paman ata.ma transpose man guro na? if m is unknown then m can be equal to E/c squared?

so kung naay usa ka physical entity with unknown mass, e-subject nato sya ug certain amount of energy like 10 Joules for example and since ingon ni albert na ang energy has the same proportion to mass, pede ta mo gamit ug ratio and proportion equation?

di ko sure haha

[igibouy]

I'm having a hard time with finding mass.


In the formula m = N/a, N = ?. Let's say that you're trying to get the mass of an object located in a vacuum space. Therefore your weight is technically none existent. How do you calculate your mass?

Often we can't

If we are going to consider that your mass calculated with the presence of gravity would always be the same in the absence of gravity?

Yes, because mass is constant

If yes then it is safe to safe that if I weight 10Kg on earth then I would weight the same on an planets.

If yes then it is safe to safe that if my mass is 10Kg on earth then it will be the same on other planets. FTFY

If that the case then the formula in w=ma, "a" which is the acceleration should always be constant, which of course violated the law of physics. We can try m=f/a, where "a" is not bound to acceleration due to gravity, but what about "f" or force? Doesn't that require mass as f=ma? Lastly we can try density*volume, where "p" or density is m/u where "m" mass and then "u" unit. So I still have to calculate the mass per unit. So is there anyway that we can calculate mass of an object?

In the recent discovery of the Higgs, there's no equation that I can find where we can calculate mass. Is there any physicist in here that can shed light to my dilemma I would be eternally grateful.

I'm lost in your wording

[aldrin89]

Wow, kutaw utok ani dah... maminaw lang ko sa mga genius diri.


"If yes then it is safe to safe that if I weight 10Kg on earth then I would weight the same on an planets. "

You mean our weight would be the same on other planets? Sa ako lang nakatunan, our weight is the product of our mass X gravitational pull diba? so if you we are in a planet which has a different g as of earth then your weight will not be the same.

"m=f/a, where "a" is not bound to acceleration due to gravity"

So your "Mass" here is moving where? kay dili man siya bound to gravity?

[gotnowheels]

Often we can't



Yes, because mass is constant



If yes then it is safe to safe that if my mass is 10Kg on earth then it will be the same on other planets. FTFY




I'm lost in your wording

What I am trying to say boss is that, is there any equation to calculate our mass in a vacuum space? We can't use m=N/a for sure, since N = weight. And to get weight we use the formula weight = ma... confusing since m=? Then if your saying that if I weight 10kg on Earth, I would still weight 10kg on say, Jupiter? I'm pretty sure that the acceleration due to gravity in Jupiter isn't 9.8m/s squared. Or am I wrong? I know our mass is constant, but how what equation or formula do we use to get our true mass.

[gotnowheels]

So your "Mass" here is moving where? kay dili man siya bound to gravity?

Does it have to be moving, what if an object floating in space at a constant speed of 12m/s squared.


@igibouy
Can you gave me an equation where it shows mass is the same regardless of which planet the object is in?

[gotnowheels]

e=mc squared is an equation paman ata.ma transpose man guro na? if m is unknown then m can be equal to E/c squared?

so kung naay usa ka physical entity with unknown mass, e-subject nato sya ug certain amount of energy like 10 Joules for example and since ingon ni albert na ang energy has the same proportion to mass, pede ta mo gamit ug ratio and proportion equation?

di ko sure haha

Libog boss, kay lets say na E=mc2, nya atong balihon m=e/c2 so m=?, then you have a given E. Let's say hatagan kag problem na ang given kay let's say weight sa object is 100g and of course c = speed of light in vacuum. How do you get m?

[igibouy]

What I am trying to say boss is that, is there any equation to calculate our mass in a vacuum space?

If we are just floating in space without any influence in gravity then, like I said, we often can't calculate the mass. But, if we are floating in space orbiting something like, say, the sun, then you can use Kepler's third law to calculate our mass in space (T^2 /r^3 = 4Pi^2 /GM). This method is only one of the ways to calculate for mass. You can also use M = 4 π^2 a^3 / (G T^2 ) where n = pi, T = revolution time, G = universal gravitational constant (6.67384 × 10^-11 m3 kg^-1 s^-2)

We can't use m=N/a for sure, since N = weight. And to get weight we use the formula weight = ma... confusing since m=? Then if your saying that if I weight 10kg on Earth, I would still weight 10kg on say, Jupiter? I'm pretty sure that the acceleration due to gravity in Jupiter isn't 9.8m/s squared. Or am I wrong? I know our mass is constant, but how what equation or formula do we use to get our true mass.

In common terms, mass and weight can be interchangeable so it is understandable why there is confusion. In science and engineering, Mass isn't your weight, per se, but the 'amount' of matter in your body. Weight is the effect of gravity on you. You weigh less on the moon because of lower gravity but the amount of stuff in you remains the same.