Mechanics/Dynamics, rorational acceleration

  • Thread starter Thread starter craigman
  • Start date Start date
  • Tags Tags
    Acceleration
AI Thread Summary
The discussion revolves around a homework problem related to mechanics and dynamics, specifically focusing on rotational acceleration. Key equations provided include the relationships between angular acceleration, tangential acceleration, and radial acceleration. The user expresses difficulty in arriving at the correct answer despite attempts at calculations and graphical solutions. There is a call for assistance from others who understand the concepts better. The thread highlights the challenges faced in applying theoretical equations to practical problems in rotational dynamics.
craigman
Messages
8
Reaction score
0

Homework Statement


http://img136.imageshack.us/img136/7465/problemchapter5150152gh1.jpg
http://img515.imageshack.us/img515/5239/knownxd2.jpg

Homework Equations


aA=aB+aA/B
aA=aAN+aAT
aN=\omega 2r
aT=\alpha r


The Attempt at a Solution


http://img61.imageshack.us/img61/1521/attemptfj0.jpg

Graphical Solution:
http://img249.imageshack.us/img249/8320/graphicalsolutionaf3.jpg
 
Last edited by a moderator:
Physics news on Phys.org
More Calcs
http://img204.imageshack.us/img204/8186/calcsud2.jpg
 
Last edited by a moderator:
I can't get the correct answer i just don't know why
 
does anyone know this stuff?
 

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...
View full post »
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »
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...
View full post »

Similar threads

Dynamics - Blocks on an Incline Plane
Replies
5
Views
2K
Find Acceleration of Blocks A & B | Homework Statement
Replies
2
Views
2K
Calculating Force and Motion on an Inclined Plane
Replies
45
Views
5K
Second Order Op Amp circuit: Find Vo for t > 0
Replies
1
Views
7K
Solve Friction & Pulley Problem: Acceleration of Blocks
Replies
1
Views
2K
Acceleration on a curve for a car
Replies
5
Views
3K
Calculating Acceleration of Connected Blocks on a Wedge
Replies
2
Views
1K
Find Acceleration of Blocks on Table [SOLVED]
Replies
1
Views
2K
What Is the Angle When the Bean Is at Vertical Equilibrium?
Replies
14
Views
6K
Electric Field Homework: Acceleration = 1e18 m/s^2
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top