Answer:
4.2
Explanation:
The "allowance" is the difference between the maximum shaft size and the minimum hole size.
maximum shaft = C +D = 8.5 +0.1 = 8.6
minimum hole = A -B = 4.8 -0.4 = 4.4
Allowance = 8.6 -4.4 = 4.2
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For an interference fit, the allowance is negative.
Answer:
It would have to be in between the two charges and be positive for force on 9e to be zero
k 9e q/x^2= k 36e 9e /d^2
q/x^2 = 36e/d^2
q = 36e x^2/d^2
Now we need force on 36e to be zero
k 36e q/(d-x)^2 = k 36e 9e/d^2
q/(d-x)^2 = 9e/d^2
36 x^2/d^2 = 9/d^2 (d-x)^2
36 x^2 = 9 (d-x)^2
x=d/3
q = 36e (d/3)^2/d^2 = 36e/3^2 = 4 e
Answer: to avoid any accidents from happening, to ensure safety
Explanation:
Liability, easy transferring of owner ships
