Are my answers correct? -Equilibrium

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AI Thread Summary
The discussion centers on a physics problem involving a ladder leaning against a wall, where the user seeks validation for their calculated forces. The user calculated the force exerted by the wall (N1) as 228.63N, and the horizontal (fx) and vertical (fy) components of the force exerted by the floor as 228.63N and 600N, respectively. Other participants in the thread confirm that the user's answers align with their own calculations. The consensus indicates that the calculations for the forces are correct. The discussion emphasizes the importance of understanding equilibrium in physics problems.
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Homework Statement



A 5m uniform ladder weighing 120N is placed against a smooth wall in such a way that it makes 60 degrees angle w/ the horizontal. A man weighing 480N climbs up the ladder and stairs 1.5m from its upper end.

a. Find the force exerted by the wall against the ladder. (N1)

b.Find the horizontal and vertical components force exerted by the floor to the lower end of the ladder. (fx and fy)

My answers:

N1=228.63N
fx=228.63
fy=600n


So, are my answers correct?


any help will be appreciated, thank you
 
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All your answers agree with mine.
 

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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