Massless particle revolving in a circle

AI Thread Summary
The discussion centers on calculating the Y-axis acceleration of a massless particle revolving in a circle with a given rotational velocity of (2+sin(a)). Two methods are proposed for finding this acceleration, both yielding different results. Participants seek clarification on the meaning of the angle "a" and whether it represents a specific angle in the context of the problem. Additionally, there is confusion regarding the term "Y-axis acceleration" and whether it refers to the Y-component of acceleration in the xy-plane. The thread emphasizes the need for clearer problem statements and visual aids to facilitate understanding.
iNCREDiBLE
Messages
128
Reaction score
0
Given: A massless particle revolving in a circle with a rotational velocity = (2+sin(a))
To Find: Y-axis acceleration
Method #1 (from rotational acceleration)
Y-axis acceleration = (2+sin(a))(cos(a))^2
Method #2 (from Y-axis velocity)
Y-axis acceleration = (2+sin(a))(cos(a))^2-(sin(a))(2+sin(a))

Which Y-axis acceleration is correct and why?

Can someone explain this?
 
Physics news on Phys.org
rotational velocity = (2+sin(a))
What does this mean? Is a an angle? If so what angle?
And what do you mean by "y-axis" acceleration? Are we to assume that the circle is in the xy-plane and you are looking for the y-component of acceleration?
 
HallsofIvy said:
What does this mean? Is a an angle? If so what angle?
And what do you mean by "y-axis" acceleration? Are we to assume that the circle is in the xy-plane and you are looking for the y-component of acceleration?

You tell me. I have no clue what they are asking. :cry:
 
Post the problem EXACTLY as it appears in your text/homework. Attach any pictures that come with the problem (or describe them).
 

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

Calculate the speed and angle of the center of mass before a collision
Replies
3
Views
853
Deviation of Plumb Bob In Uniform Circular Motion
Replies
11
Views
3K
Calculation of Ramp Jump Distance Using Projectile Motion Formulas?
Replies
12
Views
1K
System of two wheels of different sizes with an axle through their centers
2
Replies
67
Views
4K
Modeling a mass falling from one side of the Earth to the other
Replies
1
Views
900
Torque on a Circular Current Loop under a Misaligned Magnetic Field
Replies
1
Views
939
Classic Incline problem with cylinder
Replies
13
Views
946
X and Y coordinates of an oscillating object on a spring.
Replies
3
Views
560
Why used $\cos\theta$ for $\text{y}$ axis or, gravitational force?
Replies
2
Views
2K
Wooden sphere rolling on a double metal track
2
Replies
97
Views
5K

Hot Threads

Recent Insights

Back
Top