A rigid bar of mass 15 kg is supported symmetrically by three each 2.0 m long. Those at each end is to copper and the middle one is of iron. Determine the ratios of their diameters if each is to have the same tension.

A rigid bar of mass 15 kg is supported symmetrically by three each 2.0

1.	A rigid bar of mass 15 kg is supported symmetrically by three each 2.0 m long. Those at each end is to copper and the middle one is of iron. Determine the ratios of their diameters if each is to have the same tension.
Answer» 1.31 2.31 0.31 4.31 Answer :1