In the workshop power is fransmitted by a 75 mm diameter shaff at 500 rpm It is proposed that the whole susten be replanned and 80% There power
be transmitted by two identical shafts at 720 rph. The replaced shafts
can be stressed by 80 % exfra stress over the original shaft. Estimate
the suitable diameter.​

c

step-by-step explanation:

i think because what else can be a sample of every member

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !