Is my relative motion analysis correct for this engineering problem?

AI Thread Summary
The discussion revolves around the application of relative motion analysis in solving an engineering problem. The user applied the formula for relative velocity, resulting in an angular velocity of 2 rad/s counterclockwise. They seek confirmation of their calculations and the appropriateness of using fundamental physics concepts in this context. The inquiry emphasizes the intersection of physics and engineering principles. Overall, the user is looking for validation of their solution approach.
Precursor
Messages
219
Reaction score
0
Homework Statement
2sbriuo.jpg



The attempt at a solution

I used the concept of relative motion analysis for velocity:

VB = VA + VB/A
(4) = (-2) + ω(3)
ω = 2 rad/s (CCW)

Is this correct?
 
Physics news on Phys.org
I know this is actually an engineering problem but it uses fundamental physics concepts, so it shouldn't be beyond the scope of this forum.

So can anyone confirm my solution?
 
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