Understanding Dimensions to the Basics of Dimensional Concepts

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A "dimension" refers to a measurable extent of some kind, such as length, width, height, or time, while "dementor" is a fictional creature from the Harry Potter series. The discussion highlights the importance of clarifying terminology to avoid confusion. Participants encourage asking questions to deepen understanding of dimensional concepts. Engaging with resources linked in the forum can provide additional insights. Clear communication is essential for grasping complex ideas.
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What exactly is a "demension"? Correct my spelling if it's spelled wrong.
Thanks
 
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Welcome to these Forums Chris!
Keep asking questions to understand.
Chris_Gottschal said:
What exactly is a "demension"? Correct my spelling if it's spelled wrong.
Thanks
That depends on whether you mean dimension or dementor! :smile:

(Left click on those links to find out more)

Garth
 
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Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
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