[r-t] period of swing

[Leigh Simpson]

> We were having adiscussion the other night as to how
> much one has to raise 
> the centre of gravity of a bell to increase the
> period to allow for a dodge 
> or change of direction.

I thought the point of a natural frequency of
vibration meant that the bell would always rotate at
the same speed (assuming that sin(x) is approximately
equal to x, i.e. for small angles). The speed of the
bell is really varied by ringing it up to the balance
and holding there for more or less time.

Or is it?

Leigh


	
	
		
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