Tuesday

September 30, 2014

September 30, 2014

Posted by **charlie** on Tuesday, December 16, 2008 at 6:20pm.

with just these, can i rearrange the equation:

T (4s)= 2pi times sqrt l/g

to calculate the length of the swing?

I believe i have (3.98m), but the question says to ignore the mass of the ropes. I'm worried i should use mass, but it seems uneccessary.

Any help appreciated.

- Physics -
**bobpursley**, Tuesday, December 16, 2008 at 6:45pmIgnore the mass. Yes, you have the correct formula to solve for length. Remember Galileo sat in church observing the periods of the swinging chandeliers. He concluded the size of the chandelier (mass) made no difference, just the length of the chain holding it.

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