Calculating Tension in Circular Motion

AI Thread Summary
The discussion focuses on calculating the tension force acting on mass m2 in a circular motion scenario involving a whirlygig. Given that mass m1 remains stationary, the acceleration is assumed to be zero, leading to the equation T = m1 * g. The calculation for tension is confirmed as T = 0.324 kg * 9.8 m/s², which yields the correct tension value. The absence of friction between the string and the tube simplifies the problem, affirming the accuracy of the approach. The conclusion is that the tension force acting on mass m2 can be determined using this method.
Anon2459

Homework Statement


A whirlygig is made by hanging a mass, m1 = 324.0 g, through a tube and then spinning another mass, m2 = 111.0 g around so that it forms a circle. When this happens the string makes a small angle with the horizontal as shown in the diagram. If this is done at a specific speed then m1 does not move up or down, for this question assume than m2 is moving at this speed. Also assume that there is no friction between the string and the tube.

What is the magnitude of the tension force acting on mass m2?

Homework Equations



T = mxa + mxg

The Attempt at a Solution


[/B]
Since it says that at this speed, m 1 will not move up or down, I'm assuming a is zero

therefore,

T = 0.324 x 9.8

Correct or incorrect?
 
Last edited by a moderator:
Physics news on Phys.org
Yes, that sounds right.
 

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

Calculating speed in circular motion
Replies
1
Views
1K
Tension of string acting on stone moving in horizontal circular motion
Replies
19
Views
3K
Tension in a string connecting two blocks having equal and opposite velocities
Replies
21
Views
311
Particle dynamics (mechanics): inclined plane, pulley, two blocks
Replies
14
Views
2K
Question kinetic energy in circular motion
Replies
2
Views
3K
Acceleration of rising mass and tension in cord
Replies
33
Views
3K
Circular Motion With Constant Angular Acceleration
Replies
3
Views
2K
Calculating tensions and acceleration
Replies
10
Views
2K
What is the Speed at the Bottom of a Vertical Circle?
Replies
9
Views
2K
Is Vertical Circular Motion Ever Uniform?
Replies
10
Views
3K

Hot Threads

Recent Insights

Back
Top