Question

The uniform 130-lblb beam is initially at rest when the forces are applied to the cables. Set FAFAF_A = 130 lblb and FBFBF_B = 170 lblb .(Figure 1)

MasteringEngineering Masterir x C Item 3 The Uniform 130-1b Bes X + • session.masteringengineering.com/myct/itemView?assignment ProblemlD=11226094 H MAE 242 Summer 2020 Hader 3 CME HW10 Problem 17.92 < 11 of 15 Review The uniform 130-1b beam is initially at rest when the forces are applied to the cables. Set FA = 130 lb and FB = 170 lb . (Figure 1) Part A Determine the magnitude of the acceleration of the mass center at this instant. Express your answer to three significant figures and include the appropriate units. HA ? Value Units Submit Request Answer Figure 1 of 1 > Part B Determine the angular acceleration of the beam at this instant. Express your answer to three significant figures and include the appropriate units. FB THA ? A B 60° Value Units 1211 Submit Request Answer Provide Feedback Next >

Answer 1

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FA Bolb uniform beam FA = 130 lb FB = 170 lb A B 60 ° Efyzo 12ft > Now, calculating moment of beam's centre Inertia of Fosinoo-130 +130=(W 9 170 singo-130 +130=/130 Jay I = 1/2 (W/3) e² I= 1/2 ( 130 ) x 12² I= 48.4472 slug-ft ² 32.2 2. ay=3614663 m/s² - 0 Etr-o Now, EM=Ix To cos6o= ( w/g ) av 170 cougo = (130 32.2 an che 170sn.6ox.6 - 130x6 = 48.6472x qu = 21.0538 m/ser? x= 20133165 rad radfree? By Ø f a= ax²tay2 Amores a= 42.10766 m)see? Answer