Three forces - in equilibrium or not?

AI Thread Summary
The discussion centers on the concept of equilibrium in physics, specifically regarding three forces. A newcomer seeks clarification on whether their understanding of the forces is correct. Responses confirm that the forces are not in equilibrium from left to right. It is suggested that the individual should include relevant equations to support their analysis. The conversation emphasizes the importance of mathematical proof in determining equilibrium.
shin777
Messages
42
Reaction score
0
Three forces -- in equilibrium or not?

Hi. I am new to physics and need some help on this question asap. Did I get it right or is it wrong? Correct me if I am wrong. Thank you.

332qd0k.jpg
 
Physics news on Phys.org
Looks good.
 
You are correct. It's not in equilibrium left to right but your working should really include the equation that proves it. eg...

33Cos(30) - 20Cos(22) <> 0
 
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...
Back
Top