32 Turner, Total Solar Eclipses. 



2R from the centre, so that a^ R: and that in this case yn = 10. 

 Then the velocity Kat the surface {r = R) is given by 



2 I 



For any other force /.t and the same initial velocity io/7? we 

 have 



R ro 



a ~ ^ A*' 



Putting ju = 9, 8, &c., in succession, we get the results in the 

 text. 



