Hey I posted in homework help but now it's gone

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Posts related to homework problems may be deleted by mentors if they lack evidence of effort in solving the problem. Users will receive a warning notification explaining the deletion, which can be viewed by clicking the Envelope icon on the site. Additionally, homework posts made in incorrect forum sections or violating other rules may also be removed. To understand the guidelines, users are encouraged to review the forum's general rules and specific homework guidelines. Following these rules is essential for maintaining the integrity of the forum.
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If you posted a homework problem, and you don't see it any more, it might have been deleted by one of the mentors. The mentors routinely delete homework or homework-like problems where you haven't shown any effort at solving the problem. If your post is deleted for this reason, the mentor will also send you a warning notification which explains why your post was deleted.

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(last updated Nov 30, 2021 by Mark44)
 
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Likes dipcario34, M. M. Fahad Joy, Avimanyu Ray and 4 others
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...
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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