1-20 From O-Rings, Inc. (), Di = 5.237 0.035 in, d = 0.103 0.003 in o i 2 5.237 2 0.103 5.443in tDo tall 0.035 2 0.003 0.041in

Do = 5.443 0.041 in Ans.

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1-21 From O-Rings, Inc. (), Di = 1.100 0.012 in, d = 0.210 0.005 in o i 2 1.100 2 0.210 1.520in

tDo tall 0.012 2 0.005 0.022in

Do = 1.520 0.022 in Ans.

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1-22 From Table A-2, (a) = 150/6.89 = 21.8 kpsi Ans. (b) F = 2 /4.45 = 0.449 kip = 449 lbf Ans. (c) M = 150/0.113 = 1330 lbf in = 1.33 kip in Ans. (d) A = 1500/ 25.42 = 2.33 in2 Ans. (e) I = 750/2.544 = 18.0 in4 Ans. (f) E = 145/6.89 = 21.0 Mpsi Ans. (g) v = 75/1.61 = 46.6 mi/h Ans. (h) V = 1000/946 = 1.06 qt Ans.

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1-23 From Table A-2,

(a) l = 5(0.305) = 1.53 m Ans.

(b) = 90(6.89) = 620 MPa Ans. (c) p = 25(6.89) = 172 kPa Ans.