Recent content by Gregor

the end result must equal the known, measured value for g this is the only way we can measure Earth's mass Edit:Enough with the insults Integral tell that to your Admin... and these are grown up people?

the precise value of Earth's mass (for those nearsighted thwackheads out there in physics lalaland) may be derived by Newton's Gravitational Formula Fg = G Mm / r² since the value of Re is precisely known to be 6 378 137 m which squared = 40 680 631 590 769 and the value of G is a...

i know what dimensional analysis is the table was an illustration giving numerical proof and what the hell do you find so funny about Earth's mass? are all mentor's in this forum narrowminded?

[/PLAIN] it was you who posted the expression https://www.physicsforums.com/latex_images/93/938964-0.png which is meaningless you need serious helpthe dimensional analysis is represented in the table i calculated if you take the time to read the table you will find that it's absolutely...

ok, what was the point of moving this topic to Homework & Coursework Questions ? this is neither Homework nor Coursework it's a Classical Physics topic a demonstration of my ability to perform Dimensional Analysis :cool:

anyone have any criticisms of my calculations now? :rolleyes:

Newton's universal formula for calculating Gravity: Fg = G Mm / r² which states that two objects attract each other with a force equal to the product of their masses divided by the square of their separation, times a constant of proportionality (G), where G = 6.6742(10) x 10^-11 makes it...

how are they wrong? the only difference between 9.80665 * 0.001 * 0.001 = 0.00000980665 and 9.80665 m * 0.001 s * 0.001 s = 0.00000980665 m/0.001 s/0.001s is that the units are added in the last expression this does not make them "wrong", but simply "included" or "not included". the...

I see you're getting angry now :-( yes, I've seen the point all along however it's my point that is being missed 9.80665 (Z) * 0.001 (I) * 0.001 (I) = 0.00000980665 (N) there are no apples, oranges, or any physical entities here just numbers to be computed. the result (N) just happens to be...

I realize this the only importance for the formula is that it produces the correct numerical value for 1 g in revised units and the forumula does this perfectly as I have demonstrated several times (to the annoyance of every physicist in the forums)

I think this would be a very funny analogy, if only I understood what it meant :confused: I should tell you that English is not my first language (ich bin Deutscher) so sometimes things get lost in the translation %-/ I know a drug store is what we call an Apotheke

true, however this is just a conversion formula yes, the units must always be consistent throughout the expression, in my demonstrations I've used prefixed units for simplicity, however these units are consistant throughout each expression

yes of course this depends on which symbols if I change the equation to N = Z*I² and then define the symbols as N = new value Z = 9.80665 I = Time Interval then there's no physical violation

I needed a physicist to settle an argument whether 1 g = 9.80665 mm / ms / ms (as my friend claimed) or 9.80665 µm / ms / ms (as I correctly calculated) my answer was right even though my equation had nothing to do with physics and thanks to you - I can use the...

for making physicists want to hit me... mostly :rolleyes: it's quite handy as a fast conversion algorithm when experimenting with new units my strange little equation saves a lot of stepsI think it quite interesting to play with revised units for example : if the meter is redefined as...