Answer:
I believe reverse boost valve.
Answer:
endurance length is 236.64 MPa
Explanation:
data given:
d = 37.5 mm
Sut = 760MPa
endurance limit is
Se = 0.5 Sut
= 0.5*760 = 380 MPa
surface factor is
Ka = a*Sut^b
where
Sut is ultimate strength
for AISI 1040 STEEL
a = 4.51, b = -0.265
Ka = 4.51*380^{-0.265}
Ka = 0.93
size factor is given as
Kb =1.29 d^{-0.17}
Kb = 0.669
Se = Sut *Ka*Kb
= 380*0.669*0.93
Se = 236.64 MPa
therefore endurance length is 236.64 MPa
Complete Question
The cars of a roller-coaster ride have a speed of 19.0 km/h as they pass over the top of the circular track. Neglect any friction and calculate their speed v when they reach the horizontal bottom position. At the top position, the radius of the circular path of their mass centers is 21 m, and all six cars have the same mass.V = -18 m What is v?X km/h
Answer:
![v=23.6m/s](https://tex.z-dn.net/?f=v%3D23.6m%2Fs)
Explanation:
Velocity ![v_c=18.0km/h](https://tex.z-dn.net/?f=v_c%3D18.0km%2Fh)
Radius ![r=21m](https://tex.z-dn.net/?f=r%3D21m)
initial velocity u![u=19=>5.27778](https://tex.z-dn.net/?f=u%3D19%3D%3E5.27778)
Generally the equation for Angle is mathematically given by
![\theta=\frac{v_c}{2r}](https://tex.z-dn.net/?f=%5Ctheta%3D%5Cfrac%7Bv_c%7D%7B2r%7D)
![\theta=\frac{18}{2*21}](https://tex.z-dn.net/?f=%5Ctheta%3D%5Cfrac%7B18%7D%7B2%2A21%7D)
![\theta=0.45](https://tex.z-dn.net/?f=%5Ctheta%3D0.45)
![\theta=25.7831 \textdegree](https://tex.z-dn.net/?f=%5Ctheta%3D25.7831%20%5Ctextdegree)
Generally
Height of mass
![h=\frac{rsin\theta}{\theta}](https://tex.z-dn.net/?f=h%3D%5Cfrac%7Brsin%5Ctheta%7D%7B%5Ctheta%7D)
![h=\frac{21sin25.78}{0.45}](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B21sin25.78%7D%7B0.45%7D)
![h=20.3m](https://tex.z-dn.net/?f=h%3D20.3m)
Generally the equation for Work Energy is mathematically given by
![0.5mv_0^2+mgh=0.5mv^2](https://tex.z-dn.net/?f=0.5mv_0%5E2%2Bmgh%3D0.5mv%5E2)
Therefore
![v=\sqrt{u^2+2gh}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7Bu%5E2%2B2gh%7D)
![v=\sqrt{=5.27778^2+2*9.81*20.3}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%3D5.27778%5E2%2B2%2A9.81%2A20.3%7D)
![v=23.6m/s](https://tex.z-dn.net/?f=v%3D23.6m%2Fs)
Answer:
See explaination
Explanation:
See attachment for the detailed step by step solution of the given problem.