Question

In-Class Problem #7 A = 2 in2 E = 1,000 ksi 1. Determine the magnitude of the reaction at A. a) 9.7 kips b) 5.8 kips c) 7.4 kips d) 6.2 kips e) None of the above 9" 12" 2. If there is a 0.012” gap adjacent to B prior to the loads being applied, determine the reaction at A a) 10.5 kips b) 6.4 kips c) 9.0 kips d) 8.2 kips e)

please show details,thanks.

Answer 1

. Foree body digporam of thegiven badr: чківs 3 кiRs 5xiPs RA RB C 6 2" APPyy. equinibium onditions EFO 12 kiPs Since two ends aae fined at A YB, total defodrmation in the ba is zcao EB DE AC S-No Poutton Fouce Natuie Lensile RA AC nsile CD 2 nsile RA-7 DE 3 tensile RA-12 E8 4

ow dotal defecfion со ALAC + EB CD (32 (RA-)9 A E (RA-7)6(RA-12)12 o AE AE AE 3RA+9RA-36 +6R-42 +12R-144=0 30 ва 222 Ra =222 . 30 RA 74 kiPs 7.4 kiPs (OPtiorc) deaclion at A magnitude of

Sinec the gap at B is o.012" 2. total defoamation = 0.012 RA(3)(RA-) + (R-7)6 (RA-1212 O.O12 A E AE AE AE lo.012) AE = 3RA9RA 36+6R-42 +12RA-I 30RA (0.012) AE222 30 RA = (0.012) 2) ( 1000) +222 246 RA 30 RA 8.2 kips mainitude of taction at A - 8-2 nies (option d