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# Sticks Kinematics

Best Answer m00li, 29 April 2014 - 10:55 PM

Go to the full post

4 replies to this topic

### #1 TimeSpaceLightForce

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Posted 10 July 2013 - 05:51 PM

A yard stick was cut on 1 foot mark so that the other 2 footer stick cut can be placed on top of another yardstick to make it roll or pivot
on its ends and middle around (above and below) the yardstick clockwise.
While the 1 footer stick was placed on top of 2 footer stick to make it roll around it counterclockwise without touching the fixed yardstick.
Starting at position shown and same 1 RPM motion, how long will it take for the sticks to knock the ball down?

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### #2 k-man

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Posted 10 July 2013 - 07:19 PM

Is the short stick (1ft) rotating around the long stick (2ft) with the 1RPM speed relative to the long stick or to the stationary yardstick?

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### #3 TimeSpaceLightForce

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Posted 10 July 2013 - 11:49 PM

Relative to the long stick, i.e. when an a fly is on the long stick it would see both the short stick and the yard stick rotating at the same speed.

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### #4 TimeSpaceLightForce

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Posted 28 April 2014 - 09:35 PM

Spoiler for

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### #5 m00li

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Posted 29 April 2014 - 10:55 PM   Best Answer