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# Circular motion moving radially? watch

1. https://www2.physics.ox.ac.uk/study-...at-past-papers
On the 2014 paper the very last part of the last question, it says
m1 will not be moving radially
What does this mean?
and what is the difference between moving horizontally and radially- are they the same?
2. (Original post by runny4)
https://www2.physics.ox.ac.uk/study-...at-past-papers
On the 2014 paper the very last part of the last question, it says
m1 will not be moving radially
What does this mean?
and what is the difference between moving horizontally and radially- are they the same?
"not moving radially" means not moving along ANY radius of the circle (be it horizontal or whatever).
3. (Original post by Indeterminate)
"not moving radially" means not moving along ANY radius of the circle (be it horizontal or whatever).
so how will m1 be moving?
4. (Original post by runny4)
so how will m1 be moving?
The length of each half of the table represents the radius of the circle that is "created" when the table rotates. So you don't want the mass to be moving length-ways across the table, that's all.

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5. (Original post by Indeterminate)
The length of each half of the table represents the radius of the circle that is "created" when the table rotates. So you don't want the mass to be moving length-ways across the table, that's all.

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oh i get now thanks

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