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July 24, 2014

July 24, 2014

Posted by **Anonymous** on Monday, October 19, 2009 at 10:46am.

- Physics -
**bobpursley**, Monday, October 19, 2009 at 11:05amwell, centripetal force must be greater than weight

mg<=mv^2/r

v>=sqrt(g*r)

check that.

- Physics -
**Anonymous**, Monday, October 19, 2009 at 11:08ami don't know where to go from there

- Physics -
**bobpursley**, Monday, October 19, 2009 at 11:22amv is the minimum speed.

- Physics -
**Young J. Hong**, Friday, February 15, 2013 at 5:17pmConsider the following equation in the y-direction.

Fy=T+Fg=ma

Or in this case...

T+Fg=(mv^2)/R

Tension equals to 0 because when the pail of water is at the highest point, tension is nonexistent.

Therefore...

mg=(mv^2)/R

Cancel out mass

g=(v^2)/R

(Rg)^(1/2)=v

Plug in values.

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