meriam0d

Meriam0d - USEFUL TABLES TABLE D/l PHYSICAL PROPERTIES Density(kg/m3 and specific weight(lb/ft3 kg/m3 lb/ft3 kg/m3 lb/ft" Air 1.2062 0.07530

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: USEFUL TABLES TABLE D/l PHYSICAL PROPERTIES Density (kg/m3) and specific weight (lb/ft3) kg/m3 lb/ft3 kg/m3 lb/ft" Air* 1.2062 0.07530 Aluminum 2 690 168 Iron (cast) 7 210 450 Concrete (av.) 2 400 150 Lead 11 370 710 Copper 8 910 556 Mercury 13 570 847 Earth (wet, av.) 1 760 110 Oil (av.) 900 56 (dry, av.) 1 280 80 Steel 7 830 489 Glass 2 590 162 Titanium 3 080 192 Gold 19 300 1205 Water (fresh) 1 000 62.4 Ice 900 56 (salt) 1 030 64 At 20°C (68°F) and atmospheric Wood (soft pine) 480 30 pressure (hard oak) 800 50 Coefficients of friction (The coefficients in the following table represent typical values under normal working conditions. Actual coefficients for a given situation will depend on the exact nature of the contacting surfaces. A variation of 25 to 100 percent or more from these values could be expected in an actual application, depending on prevailing conditions of cleanliness, surface fin- ish, pressure, lubrication, and velocity.) TYPICAL VALUES OF COEFFICIENT OF FRICTION CONTACTING SURFACE STATIC, [4,. KINETIC, m. Steel on steel (dry) 06 0.4 Steel on steel (greasy) 0.1 0.05 Teflon on steel 0.04 0.04 Steel on babbitt (dry) 0.4 0.3 Steel on babbitt (greasy) 0.1 0.07 Brass on steel (dry) 0.5 0.4 Brake lining on cast iron 0.4 0.3 Rubber tires on smooth pavement (dry) 0.9 0.8 Wire rope on iron pulley (dry) 0.2 0.15 Hemp rope on metal 0.3 0.2 Metal on ice 0.02 “ 704 USEFUL TABLES Appendix D TABLE D/2 SOLAR SYSTEM CONSTANTS Universal gravitational constant G = 6.673(10'“) ma/(kg-sz) = 3.439(10‘3) ft4/(lbf-s“) Mass of Earth me = 5.976(1024) kg = 4.09500”) lbf-sZ/ft Period of Earth’s rotation (1 sidereal day) = 23 h 56 min 4 s : 23.9344 h Angular velocity of Earth a, : 0_7292(10—4) rad/s Mean angular velocity of Earth—Sun line (0' : 0_1991(10-6) rad/s Mean velocity of Earth’s center about Sun = 107 200 km/h = 66,610 mi/h MEAN SURFACE DISTANCE ECCENTRICITY PERIOD MASS GRAVITATIONAL ESCAPE TO SUN OF ORBIT OF ORBIT DIAMETER RELATIVE ACCELERATION VELOCITY BODY km (mi) 9 solar days TO EARTH m/s2 (ft/52) km/s (mi/s) Sun — — — 1 392 000 333 000 274 616 (865 000) (898) (383) Moon 384 398* 3 476 0.0123 1.62 2.37 (238 854)* (2 160) (5.32) (1.47) Mercury 57.3 X 106 5 000 0.054 3.47 4.17 (35.6 X 10“) (3 100) (11.4) (2.59) Venus 108 X 106 12 400 0.815 8.44 10.24 (67.2 X 105) (7 700) (27.7) (6.36) Earth 149.6 X 106 12 742'“ 1.000 9.821" 11.18 (92.96 X 10“) (7 918)" (32.22) (695) Mars 227.9 X 10'i 6 788 0.107 3.73 5.03 (141.6 X 105) (4 218) (12.3) (3.13) j‘ Mean distance to Earth (center-to-center) : Diameter of sphere of equal volume, based on a spheroid Earth with a polar diameter of 12 714 km (7900 mi) and an equatorial diameter of 12 756 km (7926 mi) 5 For nonrotating spherical Earth, equivalent to absolute value at sea level and latitude 375° Table D/3 USEFUL TABLES 705 TABLE D/3 PROPERTIES OF PLANE FIGURES F '1— l AREA MOMENTS —‘ FIGURE CENTROID 4— OF IN ERTIA r v r Sln Arc Segment 437.)? a \\ a \ \ }— 1~ ~ a Quarter and Semicircular Arcs ‘l! H I Circular Area Semicircular Area |_ Quarter-Circular Area Area of Circular Sector 706 USEFUL TABLES Appendix D TABLE D/3 PROPERTIES OF PLANE FIGURES Continued AREA MOMENTS FIGURE CENTROID OF INERTIA _b_h$ ‘3 _b_h"* “12 bh ‘:_ 2 2 I2 12(b +h) Rectangular Area IX T 1_b_ha 3[(—11 —Tx1 a+b x—12 ; 3 21113 h i i _ h ‘ 36 x y’é Triangular Area Area of Elliptical y Quadrant 4a RI ll l Subparabolic Area 8| ll | y:kx24_£x2 02 4 \ ab 3 “IV b 3a | | Area A = : Table D/4 USEFUL TABLES 707 W TABLE D/4 PROPERTIES OF HOMOGENEOUS SOLIDS (m = mass of body shown) MASS MASS MOMENTS CENTER OF INERTIA Circular Cylindrical —— Ix“cl = imr2 + imp Shell 2N ll 3 ‘3 N Half Cylindrical Shell Circular Cylinder Semicylinder Rectangular Parallelepiped 708 USEFUL TABLES Appendix D W TABLE D/4 PROPERTIES OF HOMOGENEOUS SOLIDS Continued (m = mass of body shown) MASS MASS MOMENTS CENTER OF INERTIA -/ Spherical Shell Hemispherical Shell - = I x 2 — [:2 : :élmrz 3r [xx : Iyy : Izz _ é)er Hemisphere 9‘: = — _ _ V ‘ 8 IW : I z = :33.er l 1 l rm \ \. I Uniform Ivv : fiml Slender Rod — I H A 2 3’1 Table D/4 USEFUL TABLES 709 TABLE D/4 PROPERTIES OF HOMOGENEOUS SOLIDS Continued (m : mass of body shown) MASS MASS MOMENTS CENTER OF INERTIA , , i 2 Quarter- In - In - zlnr Circular Rod : 2_r I” : mrz 7'! I“ = ima2 + f'ngZ _ L ‘ i I Elliptical _ [xv — “"52 + 1271112 Cylinder In : %m(a2 + b2) [ml = lme + ;-‘,ml2 * [w : imr2 + émh2 r l Conical ( . ‘ Iv = lmrz + 1;th 5?: l \ Shell 2 2 2_h 4 ‘ 2 i hlAy 3 122 —' %mr2 . W/ _ yl Ivy : ler + [xx = I\\ = lmr2 + %mh2 \ . Half _ 4,. (I l \ ’ x=— lexl wIVIVI 2/ I )\ Conlcal 3n /h/l/ y Shell = lmr2 + 3*th I V _ _ at 4 u I: '1 x Z _ 3 122 : Lmrz — 1 16 \ — _ v. _ 2 122 97:2) mr Ivv : '3er + gth Right- 2" Circular 3h 1m] : %mr2 + fimhz Cone 5 : — . 4 122 = [40er 7vv Z 2—30er + 710 USEFUL TABLES TABLE D/4 PROPERTIES OF HOMOGENEOUS SOLIDS Continued (m 2 mass of body shown) BODY MASS CENTER Elliptic Half Torus MASS MOMENTS OF INERTIA — = — : l 2 2 ParabOIOid 2 3 122 (;m(a + b ) x jxx : + lC2) ivy = %:77I((12 + lc2) [xx = + C2) _ a l x : Z Ivy : Wm(az + CZ) Rectangular c 122 = L 2 + [)2 Tetrahedron 7 2 Q mm(a ) 4 71x = + C2) '2' = i j” = mimmz + 62) jzz : $771012 + 52) a2 + 4R2 Ix = I” = §mR2 + imaZ Appendix D ...
View Full Document

This note was uploaded on 04/16/2008 for the course CE 325 taught by Professor Docwong during the Spring '08 term at USC.

Page1 / 8

Meriam0d - USEFUL TABLES TABLE D/l PHYSICAL PROPERTIES Density(kg/m3 and specific weight(lb/ft3 kg/m3 lb/ft3 kg/m3 lb/ft" Air 1.2062 0.07530

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online