Ball hanging from string, what is tension when at its lowest point?

AI Thread Summary
The discussion revolves around calculating the tension in a rope from which a heavy ball is suspended as a pendulum. At the lowest point of the swing, the forces acting on the ball include the tension in the rope and the weight of the ball. The tension must counteract the gravitational force while also providing the necessary centripetal force due to the ball's speed of 5.6. The participants confirm that frictional forces can be ignored for this calculation. Understanding these forces is crucial for determining the tension in the rope at the lowest point of the swing.
racer98jc
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Homework Statement



A heavy ball with a weight of 130 is hung from the ceiling of a lecture hall on a 4.6--long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.6 as it passes through the lowest point.

What is the tension in the rope?


Homework Equations





The Attempt at a Solution

 
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Hi racer98jc, welcome to PF.

What are the forces acting on the ball at the lowest point of the swing?
 
Last edited:
Hello,

at the bottom: tension and the balls own weight are acting on it. Correct?
 
racer98jc said:
Hello,

at the bottom: tension and the balls own weight are acting on it. Correct?

Correct(the question probably wants you to ignore frictional forces)
 

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