Solving for Tension & Angles in Ball Mass Problem: Help Needed!

AI Thread Summary
The discussion focuses on determining the tension and angles in a system involving two balls with different masses, where one ball has mass m and the other has mass 2m. The length of the thread connecting them is 2R, with R being the radius of the circle. The relationship between the angles is established using the equation m1*g*sinθ1 = m2*g*sinθ2, leading to the conclusion that sinθ1 = 2*sinθ2. By substituting θ2 with (2 - θ1) and solving the equations, the angles can be calculated. The problem emphasizes the need to account for the differing masses to accurately find the angles and tension in the system.
385sk117
Messages
50
Reaction score
0
http://ruliweb6.nate.com:8080/ruliboard/gup/img_link7/436/435945_1.jpg

Ball A B
Mass m 2m

Length of tread is 2R where R is the radious of the Circle.
I have to find the tension on the tread and angles
I could have found the angles by assuming that the angle 1 and angle 2 are same
but as balls' masses are different, the angles must be different as well, and if they are different i don't think i can find the angle...
Any helps? Please TT
 

Attachments

  • 1.jpg
    1.jpg
    9.7 KB · Views: 449
Last edited by a moderator:
Physics news on Phys.org
Ball comes rest when
m1*g*sinθ1 = m2*g*sinθ2.
It is given that m2 = 2m1
So sinθ1 = 2*sinθ2...(1)
Length of the thread is 2R and radius is R.
So (θ1 + θ2) = 2R/R = 2 rad.
Put θ2 = (2 - θ1) in the eq.1 and solve for θ1.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'A bead-mass oscillatory system problem'
I can't figure out how to find the velocity of the particle at 37 degrees. Basically the bead moves with velocity towards right let's call it v1. The particle moves with some velocity v2. In frame of the bead, the particle is performing circular motion. So v of particle wrt bead would be perpendicular to the string. But how would I find the velocity of particle in ground frame? I tried using vectors to figure it out and the angle is coming out to be extremely long. One equation is by work...
Back
Top