The rigid pipe is supported by a pin at A and an A-36 guy wire BD. If the wire has a diameter of 0.25 in., determine the load P if the end C is displaced 0.075 in. downward.

P=568.96 lb

Explanation:

The steel wire BD is made of material A — 36 and has a diameter d = 0.25 in.It is necessary to determine the force P if the point C moves by 0.075 in downwards.  

Ф=

  =0.06°

Determination of length BD:  

BD=

    =60 in

Determination of length BD':  

BD'=

BD'=5.0025 ft

Normal strain is the ratio of the length of the element before and after deformation.  

We have all the necessary data to be able to calculate normal strain.  

For BD

formula is:

∈=  BD'-BD/BD

∈=5* in/in

now we can determine the normal stress:

σ=E.∈

     = 14.5 ksi

surface cross sectional area is:

Force is:

=σ*

=0.711 kip

determination of static effects

we apply the conditions of equilibrium:

∑

∑

∑M  = 0

from pic (c)

∑∑=0

so P=568.96 lb

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.