52. A
cantilevered tube is subjected to a force 
as shown in the figure. The tube
has an outside diameter of 
and inside diameter of 
. The lenghth of the tube is 
and the modulus of elasticity is
. Assume that the allowable
transverse deflection is 
and the maximum probability of
failure is designed to be 
, estimate the inside diameter of
the tube. Note that the maximum deflection is 
Answer:
