Question

L=40cm mred=3kg msquare=9kg 0=45° B 6/4 D &/4 C The following object, made of homogeneous material created from a l-length bar and a 1/4-edge square plate, is left to the first speedless movement. Calculate the reaction force at the A support as soon as the object makes a horizontal 0 angle.

Answer 1

SOLUTION at x 40cm room | CoM (COM) x = 20x3 + 9435 = 31.25cm centre of Mass 12 (CoMy - 5 cm 31.25cm 2 L som tana= 5 31.25 31.64747 COM 45 100=9.09 Now, the systm turns by New C.O.M position (Ord=0) O = 54.099 18.56 cm A 125.63cm COM Taking Moment about A (M) System Xgx 18.56 Isystem X dsysam Isystem= 3 X 0.42 + 3x0.42 + 9x0.12 (0362 0.052) 12 4 +9 (034 6 3 = 1.3 kg . m2

& 12x 981 x 18.56 = 1.3x (2)COM loo y (@.com 16.8068 radler 31.64747 (acom- de xd.com ACOM 0.31 64747 X 16.8068 = 5.3189 m/s? M Tary= 3, 1896 m/s2 ax= axsunda ax=4.308 m/s2 ay= ax cosp (RAX of - Momxax = -51.7N TRAX (RADY (RADY Jensong (Rady + 117.72 = 37.4352 -80.2848N Thus, the reachon forus and Y (RA)x = ²517 (2y = 80.2548N 1.80.2848 7x SIIN Ing D)