Question

MEM 238 Dynamics Hi, Viktor Sign Out Help ng Engineering Course Home lome <HW10_03_11_CH19 Problem 19.22 ② 2 0f7 a Review The two gears A and B have weights and radii of gyration of WA = 20 lb. KA=0.5 ft and Wn-13 lb. kg = 0.35 ft, respectively. A motor transmits a couple moment to gear B of M 2 (1-e-.b) lb. ft, where t is in seconds. (Figure 1) Part A nt Sharing Determine the angular velocity of gear A in -4 s measured counterclockwise, starting from rest. Express your answer using three significant figures. Enter positive value if the angular velocity is counterclockwise and negative value if the angular velocity is clockwise tings Figure < 1 of 1 EVO AED Voc RO ? Tools Submit Request Answer Provide Feedback Next > masteringengineering.com/myct/itemViewiassignment Problemid-102516118 offset-next Type here to search 10/2020

Answer 1

solution Given WAZ 2016 WB 213 16 KA +0.5 Ft KB =0.35ft motor transmits a couple moment to gear B OF M Mezclés lbFt WA(0.8) = WB (0.5) WB = 4.6 WA

і 4 10.S Rd X Geox в (HQ), + Eſmoot = (Ho)? 04 S-21059) dt - Jos * (53) 60.29(.wma 4.541 - Sos Fdt +0.07413 32,2 Fdt +0.07913 WA -O Geas A 0.8 Fat z (GH) (Ha), + 5 SMA dt (Hadz 04 foara (2.70.5*] De fo.a edis -0.1553WA @ 32 2. / WA FUE O

seat with ac and solving Eliminate For WA ² 4.541 2.0.50 +0.07913 WA. . O Z 0..8 x -0.1553 WA Solve above two equations we get WA - 25,8 gadis in 16 = 45 anguiao velocity of gear A is WA = 25.8 radis