Number of Turns/Circular Motion

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Discussion Overview

The discussion revolves around a problem related to circular motion, specifically focusing on calculating the number of turns based on kinetic energy and torque. Participants are attempting to solve part (b)(iii) of a question, exploring various formulas and approaches related to work done and angular displacement.

Discussion Character

  • Homework-related
  • Mathematical reasoning
  • Debate/contested

Main Points Raised

  • One participant mentions using the kinetic energy value as work done divided by torque, but has not found success with this approach.
  • Another participant requests to see the attempts made by the original poster to better understand their process.
  • A participant points out that the original poster has made a typo in their calculation, suggesting that the value should be 2778.29 instead of 2278.29.
  • There is a challenge regarding the units of angular displacement, with a hint that it is not measured in turns.

Areas of Agreement / Disagreement

Participants have not reached a consensus, as there are differing views on the calculations and the correct interpretation of angular displacement.

Contextual Notes

There are unresolved issues regarding the assumptions made in the calculations, particularly concerning the units of angular displacement and the correction of the numerical value used in the calculations.

smr101
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Having problems with (b)(iiI).

I've tried using the kinetic energy value = work done and dividing that by torque.

I've also tried used the other circular motion formulas but haven't had any success.

Attempt:

Wd = θ x T

Ek(from b ii) = Wd

θ = 2278.29/0.6
= 3797 turns
 
Last edited:
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Show us what you've tried.
 
SteamKing said:
Show us what you've tried.

I've added what I tried.
 
I'm asking about a different question here, previous one was in regards to (b) (i), this is (b)(iii).
 
θ = 2278.29/0.6 = 3797 turns

Two errors..

1)Typo.. 2278.29 should be 2778.29
2) Check the units of angular displacement θ. (Hint: it's not turns)
 

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