GTZ Manual on Mechanization and AutomationTITLEForces and Parallelograms TITLEMoments, Simple Lever TITLESpeed and Circular MotionTITLEMechanical Power and EfficiencyTITLEInclined Plane and Cradle TITLEPulleys and Tackle TITLEGear TransmissionsTITLEMultiple TransmissionsTITLEGears, Racks, Helical GearsTITLEConical Gears TITLEPressure in Liquids and
Similar to GTZ Manual on Mechanization and AutomationTITLEForces and Parallelograms TITLEMoments, Simple Lever TITLESpeed and Circular MotionTITLEMechanical Power and EfficiencyTITLEInclined Plane and Cradle TITLEPulleys and Tackle TITLEGear TransmissionsTITLEMultiple TransmissionsTITLEGears, Racks, Helical GearsTITLEConical Gears TITLEPressure in Liquids and
Similar to GTZ Manual on Mechanization and AutomationTITLEForces and Parallelograms TITLEMoments, Simple Lever TITLESpeed and Circular MotionTITLEMechanical Power and EfficiencyTITLEInclined Plane and Cradle TITLEPulleys and Tackle TITLEGear TransmissionsTITLEMultiple TransmissionsTITLEGears, Racks, Helical GearsTITLEConical Gears TITLEPressure in Liquids and (20)
GTZ Manual on Mechanization and AutomationTITLEForces and Parallelograms TITLEMoments, Simple Lever TITLESpeed and Circular MotionTITLEMechanical Power and EfficiencyTITLEInclined Plane and Cradle TITLEPulleys and Tackle TITLEGear TransmissionsTITLEMultiple TransmissionsTITLEGears, Racks, Helical GearsTITLEConical Gears TITLEPressure in Liquids and
208. Solución:
P = F/ A
25 bar = F/A
25 daN/cm2 = F/ (π*2.83cm)^2
F = 157.25 daN
209. Solución:
(r1)^2 = 80N * (20 mm)^2 * π
320 N * π
2r1 = 20 mm
r1 =10mm
d1 = 20 mm
P = F
A
P = 320 N
(2 cm)^2 * π
P = 25.47 bar
210. PROBLEMA 39.4 – 9
P = F
A
F = P.A
F =4,5 daN.254 cm2
cm2
F = 1143 daN
m = 1143 Kg
211. PROBLEMA 39.4 – 10
A = (D2 - d2 ). 3,14
4
A = (62 cm2 – 22 cm2 ). 3,14
4
A = 25,13 cm2
P = F
A
F = F
(D2 - d2 ). 0,785
F = P. (D2 - d2 ). 0,785
F = 25 daN. (62 - 22 ). 0,785 cm2
cm2
F = 628 daN
212. PROBLEMA 39.4 – 11
F2 = F1
A2 A1
F2 = F1 . A2
A1
F2 =25N. 3,62 . 0,785cm2
1,22 . 0,785cm2
F2 = 225 N
213. PROBLEMA 39.4 – 12
P = F
A
F = P.A
F =4,5 daN. 62 . 0,785 cm2
cm2
F = 1272 daN
F = 12,72 KN
214. PROBLEMA 39.4 – 13
P = F
A
P = 100 daN
22 . 0,785 cm2
P = 31,8 daN
cm2
F = 31,8 bar
215. PROBLEMA 39.4 – 14
F2 = F1
A2 A1
F2 = F1 . A2
A1
F2 = 70N. 12,56cm2
3,14cm2
F2 = 280 N
216. PROBLEMA 39.4 – 15
P = F
A
F = P.A
F =24 daN. (2,832 - 22 )0,785 cm2
cm2
F = 7,55 daN
F = 75,5 N
217. PROBLEMA 39.4 – 16
P = F
A
F = P.A
F =50 daN. 10,2 cm2
cm2
F = 816 daN
m = 816 kg
227. 9.-
σ = F / A
σ = 800 N
( 45 – 15 ) mm * 15 mm
σ = 17.8 N/ mm2
10.-
A = 100 mm2 * 3.14 * 0.25
A = 78.5 mm2
Rm = Fm / A
Fm = Rm * A
Fm = 370 N/ mm2 * 78.5 mm2
Fm = 29045 N
228. 11.-
σ = F / A
F = σ * A
F = 85 N/ mm2 * ( 120 - 13 )mm *
15mm
F = 136.4 KN
229. 12.-
m = 600 Kg
G = 6000 N
σ1 = G / A
σ1 = 6000 N * 4
144 mm2 * 3.14
σ1 = 53 N / mm2
2 F22 = G2
F2 = ( G2 / 2 )1/2
F2 = G / 21/2
F2 = 4243 N
σ2 = F2 / A
σ2 = 4243 N * 4
144 mm2 * 3.14
σ2 = 37.5 N / mm2
231. 13.-
800 Kg = 8000 N
σ = G / A
σ = 8000 N * 4
225 mm2 * 3.14
σ = 45 N / mm2
14.-
σ = F / A
F = σ * A
A = 5mm (40mm – 10mm)
A = 150 mm2
F = 100 N / mm2 * 150 mm2
F = 15000 N
232. 15.-
4t = 40000 N
G = 40000 N
F = u * G
F = 0.3 * 40000 N
F = 12000 N
σ = F / A
σ = 12000 N * 4
256 mm2 * 3.14
σ = 60 N/ mm2
233. 16.-
σ = F / A
σ = 800 N * 4
2 * 64 mm2 * 3.14
σ = 8 N/ mm2
268. P-8
= P/A
F = d2(π)
F = 100N/mm2(152mm2)(π)
F = 70650N = 70,65KN
P = F/A
P = 70650N
4(15mm)(6mm)
P = 196 N/mm2
269. 43.1
= Fm /A
Fm =
Fm = 100N/mm2(4mm2)
Fm = 400N
(A)
= Fm /A
Fm =
Fm = 200N/mm2(30x5mm2)
Fm = 30KN
(A)
= Fm /A
Fm =
Fm = 160N/mm2(20xπx2)mm2
Fm = 20,1KN
(A)