Uniform circular motion question

AI Thread Summary
The discussion centers on a physics problem involving a ball attached to two strings rotating around a vertical rod. Participants suggest using Newton's second law to analyze the forces acting on the ball in both horizontal and vertical directions to derive the tensions in the strings. The conversation emphasizes the need to establish relationships between gravitational force, tension, and angular velocity. Additionally, the minimum angular velocity required for the lower string to remain taut is a key focus. The problem-solving approach encourages applying fundamental physics principles to find the necessary equations and solutions.
meowers
Messages
2
Reaction score
0
A ball of mass m is attached by two strings to a vertical rod. as shown above. The entire system rotates at constant angular velocity about the axis of the rod.
a)Assuming ω is large enough to keep both strings taut, find the force each string exerts on the ball in terms of ω, m, g, R, and .
b)Find the minimum angular velocity, ωmin for which the lower string barely remains taut.

I have absolutely no idea where to start with this problem.
 
Physics news on Phys.org
hi meowers! welcome to pf! :wink:

apply good ol' Newton's second law twice, in the horizontal and vertical directions, to find the relationship between a g T1 and T2 …

what do you get? :smile:​
[
 
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 hanged mass'

Thread 'A cylinder connected to a hanged 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

A Car on a Banked Curve Moving in Uniform Circular Motion
Replies
7
Views
3K
Is Vertical Circular Motion Ever Uniform?
Replies
10
Views
3K
Circular motion, tension and angular speed
Replies
16
Views
6K
How does radius affect frequency in uniform circular motion?
Replies
17
Views
9K
Tension in a string in circular motion
Replies
15
Views
6K
Circular Motion - Hanging object swinging around
Replies
7
Views
5K
Uniform Circular Motion and Projectile Motion Help
Replies
14
Views
2K
Circular motion of a rotational spring
Replies
12
Views
3K
Vertical Circle (Circular Motion)
Replies
5
Views
2K
Circular Motion Questions (energies, forces, angular velocities, etc.)
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top