Quick Clarification Question (Oscillations)

  • Thread starter Thread starter SuperCass
  • Start date Start date
  • Tags Tags
    Oscillations
AI Thread Summary
The discussion centers on a clarification regarding the maximum amplitude formula A = g / (ω²) in the context of oscillations. The formula is specific to the problem at hand, indicating that the pebble will stay on the board as long as the force acting on it does not exceed the force of gravity. The responder emphasizes that the formula applies to the general case of angular frequency but is not universally applicable to all problems. The conversation confirms that the interpretation of the formula is correct within the specific scenario discussed. Understanding these nuances is crucial for solving similar problems in oscillation dynamics.
SuperCass
Messages
60
Reaction score
0

Homework Statement



Homework Equations



The Attempt at a Solution



I just have a quick question about http://answers.yahoo.com/question/i...dDvWAH.7iY1ZZYRg--&paid=add_comment#openions"

When the answerer says that "For the general case (in case I made a numerical error), max amplitude is given by: A = g / (w^2)," is he just talking about this problem specifically or any problem in general?
 
Last edited by a moderator:
Physics news on Phys.org
It is only that problem specifically. The pebble will only remain on the board as long as the force acting on it is less than the force of gravity. If the maximum force, F=ma=m\omega^2 A were greater than the force of gravity, then the pebble would be thrown off the board.

He stated the general case in terms of any angular frequency given, not for any problem in the world. That would be a bit silly. :p
 
That's what I thought. Thanks very much!
 
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