Circular Motion Help: Solving Homework Equations

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Homework Help Overview

The problem involves concepts related to circular motion, specifically focusing on centripetal acceleration and centripetal force. The original poster expresses difficulty in understanding the questions due to absence during the relevant instruction.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants provide clues regarding the directions of centripetal acceleration and force, as well as formulas related to velocity and force. Some participants question the original poster's understanding of circular motion and centripetal force.

Discussion Status

There is ongoing discussion with participants offering hints and clues. The original poster has expressed confusion multiple times, indicating a lack of understanding of the fundamental concepts involved.

Contextual Notes

The original poster's absence during instruction may have contributed to their difficulties in grasping the material. There is a reliance on external resources for clarification.

Paulo2014
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Homework Statement


The problem is shown in the attachment.


Homework Equations





The Attempt at a Solution



I have no idea how to answer these questions as I was absent at the time so could someone please explain to me how to work these out please?
 

Attachments

Physics news on Phys.org
Clues:


a) They are asking for the direction of the centripetal acceleration.

b) They are asking for the direction of the centripetal force.

c) If velocity is applied, then it moves at tangent. Something is needed to make it travel in circle.

d) Calculate [itex]v[/itex] using [itex]v = \frac{distance (circumference)}{time}[/itex] and then use formula [itex]f = \frac{mv^2}{r}[/itex].

e) Think about [itex]f = ma[/itex]. If time period changes then the iron ball may be speeding up.
 
Last edited:
I don't understand... I'm sorry
 
Paulo2014 said:
I don't understand... I'm sorry
Do you actually understand what is circular motion and what is "centripetal force" ?
 
Paulo2014 said:
I don't understand... I'm sorry


http://www.s-cool.co.uk/topic_quicklearn.asp?loc=ql&topic_id=7&quicklearn_id=1&subject_id=2&ebt=&ebn=&ebs=&ebl=&elc="
 
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