Wheel Rotation: Vertical or Horizontal?

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Homework Help Overview

The discussion revolves around a problem involving the motion of a hot splinter dislodged from a spinning grinding wheel, with a focus on the implications of the wheel's axis of rotation being either vertical or horizontal.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the definitions of vertical and horizontal axes, with some seeking clarification on what these terms mean in the context of the problem. There is discussion about the orientation of the axis of the wheel and its implications for the splinter's motion.

Discussion Status

The conversation is ongoing, with participants questioning the definitions and implications of the axis orientation. Some guidance has been offered regarding the relationship between the wheel's rotation and the resulting motion of the splinter, particularly in terms of acceleration vectors.

Contextual Notes

There is a reference to a diagram that is essential for understanding the problem, which may not be accessible to all participants. Additionally, the discussion includes considerations of tangential and centripetal acceleration, which are relevant to the problem but not fully resolved.

majstro
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Need some help with a problem here:

A hot splinter is dislodged from a spinning grinding wheel. Which of the paths drawn in figure best represent its subsequent motion, given that the axis of rotation is a) vertical b) horizontal ?

Heres is the picture for the q.:

http://img300.imageshack.us/my.php?image=wheeljm9.jpg
 
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Well, what do you think? Please show your thoughts on the question.
 
First, what do they mean with vertical/horizontal- axis?
 
The axis of the wheel on the example is pointing "into" the picture. Am i right?
 
could someone define horizontal/vertical-axis
 
majstro said:
The axis of the wheel on the example is pointing "into" the picture. Am i right?

I'd imagine that if the axis of rotation is horizontal, then you can take the axis going into the diagram. If the axis of rotation is vertical, imagine the wheel spinning about a veritcal line drawn down the wheel through the centre.
 
For part b) your drawing seems correct (as it will be rotating much like a wheel of a car, in ideal conditions)...so my suggestion is to draw the acceleration vectors for some point on the wheel and make my guess from their.

Remember there is a tangential and a centripetal acceleration...what does this mean?
 

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