How Do You Calculate Velocity on a Circular Path Using Polar Coordinates?

[nysnacc]

Homework Statement

Homework Equations

s= r* theta
1/2 mv^2 = mgh energy conservation

The Attempt at a Solution

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I think I might be having something wrong in the attempt. And how do you do using the polar coordinate approach?

 

[cjm181]

Hey

The question gives r as 6m, not the arch length as 6m?

Cant help with much else tho! :)

 

[nysnacc]

OHHHH yes. r = 6m, so I can save time for getting that, good catch :)
And am I doing well on the energy conservation approach?

 

[CWatters]

I can't see your working very clearly on this tablet I'm using but where does the 1/2 come from in 1/2*m*g*h

 

[nysnacc]

I can't see your working very clearly on this tablet I'm using but where does the 1/2 come from in 1/2*m*g*h

I wrote it wrong, it shouldn't be 1/2 there