Circular Motion Rotational Axis

AI Thread Summary
In a discussion about angular velocity, it is clarified that both Child P and Child M, despite being at different distances from the rotation axis, have the same angular velocity when they are on the same rotating object, such as a merry-go-round. The angular velocity (ω) is constant for all points on a rigid body in uniform rotation. Therefore, regardless of their distances from the axis, both children experience the same angular velocity. This understanding emphasizes the importance of context in physics problems involving rotation. The conclusion is that both children indeed have the same angular velocity.
woaini
Messages
58
Reaction score
0

Homework Statement



Child P happens to be at a greater distance from the rotation axis than Child M. Which child has the greatest angular velocity?


2. The attempt at a solution

Do they have the same angular velocity, and if they do can you please explain. Thank you.
 
Physics news on Phys.org
woaini said:

Homework Statement



Child P happens to be at a greater distance from the rotation axis than Child M. Which child has the greatest angular velocity?


2. The attempt at a solution

Do they have the same angular velocity, and if they do can you please explain. Thank you.

It really depends a lot on what Child M and Child P are doing. If they are stuck on a disk rotating around the axis at some angular velocity ω, then their angular velocities are both ω, right? The question really has to be more specific than that.
 
They are both on the same merry-go round so I assume their angular velocities are both ω, is this correct?
 
woaini said:
They are both on the same merry-go round so I assume their angular velocities are both ω, is this correct?

Yes, it is.
 

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 '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

System of two wheels of different sizes with an axle through their centers
2
Replies
67
Views
4K
Small bead - Circular loop Problem
Replies
1
Views
2K
Circular motion of a rotational spring
Replies
12
Views
3K
Determine the angular velocity as a function of the angle
Replies
39
Views
3K
A problem from a physics national competition
Replies
13
Views
1K
How Does Adding Masses Affect the Angular Velocity of a Rotating Cylinder?
Replies
12
Views
3K
Punching a hole in a tape moving at relativistic speed
Replies
26
Views
1K
Foucault Pendulum at the North Pole
Replies
9
Views
2K
Friction direction change in a inclined circular bend (car on a road)
Replies
11
Views
1K
Rotational Motion in Newtonian Mechanics
Replies
11
Views
2K

Hot Threads

Recent Insights

Back
Top