Answer:
a) 423 rpm
b) G-factor = 60
c)

d) Yes, it would result in a successful operation
Step-by-step explanation:
Given that:
length of aluminium ring = 5 cm
outside diameter
= 65 cm
inside diameter
= 60 cm
rotational G - factor = 60
G- factor =

G- factor =

G- factor =

where v = r ω and ω =


G- factor =

G- factor =



N = 423 rpm
b) However, the material is steel and N = 423 rpm
∴ 423 ⇒


G-factor = 60
Thus, the G-factor is independent of the material
c) Centrifugal force per square meter is expressed as:

where; F =


Also; m = ρ. V
and V = A. l
∴


where;
ρ = 7.87 g/cm ³
ρ = 7870 kg/m³




d)
The rotational speed will possibly result into a successful operation. This is so because the range of speed of operation of centrifugal casting is between (300- 3000) rpm and N = 423 rpm which tells us that; it is still in range and will definitely result into a successful operation.