What is the tension in a swinging vine with a given mass and velocity?

  • Thread starter Thread starter stressedout09
  • Start date Start date
  • Tags Tags
    Circular
AI Thread Summary
The discussion focuses on calculating the tension in a vine when Jill, who weighs 61 kg, swings at a speed of 2.6 m/s. The relevant equation for tension in circular motion is F=mv^2/r, which accounts for both centripetal force and gravitational weight. Participants express confusion about setting up the equation and understanding the components of tension when Jill is both hanging and moving. Clarification is provided that total tension is the sum of tension from centripetal force and the weight of Jill. The conversation highlights the challenge of grasping circular motion concepts in physics.
stressedout09
Messages
8
Reaction score
0

Homework Statement


Jill of the Jungle swings on a vine 6.6 m long. What is the tension in the vine if Jill, whose mass is 61 kg, is moving at 2.6 m/s when the vine is vertical?

Homework Equations


F=mv^2/r

The Attempt at a Solution


F=(61)(2.6^2)/6.6
 
Last edited:
Physics news on Phys.org
When Jill is just hanging on a vine, what is the tension in the vine?
When Jill is moving with a velocity, what additional tension is added to the vine?
 
rl.bhat said:
When Jill is just hanging on a vine, what is the tension in the vine?
When Jill is moving with a velocity, what additional tension is added to the vine?

I'm sorry I still do not understand how to go about setting up the equation...I tried going over examples in my book for this type of circular motion but there does not seem to be any so I am beyond confused...I know that once I figure it out I will feel completely stupid but for now, I am just stumped. -_-
 
Total tension = tension due to centripetal force + tension due to weight.
 
thank you SOOOO much...i'm such an idiot! -_-
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Struggle to understand the concept of the question (ice cube in water optics question)'

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...
View full post »

Similar threads

Tarzan swinging on a vine -- At what angle does the vine break?
Replies
8
Views
3K
Tarzan swings on vine, will it snap?
Replies
3
Views
2K
What angle will the vine break and what's the max tension?
Replies
4
Views
2K
Swinging Tarzan: Solving for Maximum Height & Angle
Replies
3
Views
2K
Tarzan swinging on a rope -- find the acceleration
Replies
20
Views
2K
Work Check - Centripetal force - Finding Tension in a Rope
Replies
8
Views
3K
Tarzan/vine physics problem on work/energy/power
Replies
6
Views
7K
Circular Motion and String Tension
Replies
2
Views
8K
Tension Force Calculation for George of the Jungle
Replies
1
Views
3K
Finding Centripetal acceleration in a vertical system
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top