Answer:
% reduction in area==PR=0.734=73.4%
% elongation=EL=0.42=42%
Explanation:
given do=12.8 mm
df=6.60
Lf=72.4 mm
Lo=50.8 mm
% reduction in area=((*(do/2)^2)-(
*(df/2)^2)))/
*(do/2)^2
substitute values
% reduction in area=73.4%
% elongation=EL=((Lf-Lo)/Lo))*100
% elongation=((72.4-50. 8)/50.8)*100=42%
Answer:
The correct response will be "0.992". The further explanation to the following question is given below.
Explanation:
The probability that paging would be beneficial becomes 0.8
Effective paging at the very first attempted is 0.8
On the second attempt the success probability will be:
⇒
⇒
On the third attempt the success probability will be:
⇒
⇒
So that the success probability will be:
⇒
⇒
Answer:
The spring is solid safe since calculated Ns > given Ns
Explanation:
Given data :
Wire diameter (∝)= 0.148 in
outside coil diameter(OD) = 2.12 in
free length (lo) = 2.5 in
Total coil ( Nt ) = 5.75
material = A227 Hard-drawn steel
attached below is the remaining part of the detailed solution
From Table
A = 140 kpsi.i, m = 0.190
Sut = A /
since given Ns = 1.2 < 1.36 (calculated Ns) hence the spring is solid safe
