Struggling with Kinetics and Projectile Motion?

AI Thread Summary
The discussion revolves around a user seeking help with kinetics and projectile motion problems but feeling frustrated due to a lack of guidance. Forum members emphasize the importance of showing work to receive assistance, adhering to the forum's policy. The original poster expresses disappointment in not finding relevant information or support, feeling that their time has been wasted. The conversation highlights the need for users to engage actively in problem-solving to foster a collaborative environment. Overall, the thread underscores the challenges of seeking help in complex subjects without prior attempts at resolution.
MrSpades
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I've got nothing mates. Any help would be great.
 
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I've got nothing mates. Any help would be great.

...and you'll get nothing in return without showing your work at an attempt to solve the problems! Sorry, that's Forum policy!
 
K well it was obviously a waste of my time coming here, since none of this has been covered and i have no where to start.
 
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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