Tension problem for ball on string in circle radius - NEED HELP

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Homework Help Overview

The problem involves a ball being whirled in a vertical circle with a specified radius and speed, requiring the determination of tension in the string at different points in the motion. The subject area relates to circular motion and forces acting on the ball.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of free body diagrams to analyze the forces acting on the ball, specifically tension and gravitational force. Questions are raised about the correct representation of these forces and the source of tension in the context of circular motion.

Discussion Status

Some participants have provided insights into the forces involved, noting the upward tension and downward gravitational force. There is an ongoing exploration of the implications of these forces in the context of circular motion, with no explicit consensus reached yet.

Contextual Notes

Participants are considering the effects of gravity and the mechanics of circular motion, but there may be uncertainties regarding the setup and specific calculations needed to analyze the problem fully.

tatsalez
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Homework Statement



A person whirls a ball and string in a vertical circle of radius 1.50m. The ball travels at a constant speed of 6.50 m/s around the circular path; its mass is 55.0g. What is the tension in the string at (a) the bottom and (b) the top.

Homework Equations





The Attempt at a Solution



I was thinking a free body diagram but no idea how to start it. And what would it look like.

Can anyone give me a good start, or a detailed layout of how you worked the problem.

Thank you,
Matt
 
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tatsalez said:

Homework Statement



A person whirls a ball and string in a vertical circle of radius 1.50m. The ball travels at a constant speed of 6.50 m/s around the circular path; its mass is 55.0g. What is the tension in the string at (a) the bottom and (b) the top.

Homework Equations



The Attempt at a Solution



I was thinking a free body diagram but no idea how to start it. And what would it look like.

Can anyone give me a good start, or a detailed layout of how you worked the problem.

Thank you,
Matt

If it is describing circular motion vertically, what forces are acting on it from gravity and from the string?
 
It would be Ftension pointing upwards, and Mg ( mass x gravity ) pointing downwards. Is that correct?
 
tatsalez said:
It would be Ftension pointing upwards, and Mg ( mass x gravity ) pointing downwards. Is that correct?

What is the source of the tension as a result of its circular motion?
 

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