20. [lpt] *3er AWheel of mass m : L49 kg and moment of inertia. I: 0960 kg-m2 is supported by a pivot a distance d : 0.1.3 in from the Wheel, as shown in the diagram. The axle through the wheel is initially in the horizontal plane. as shown. and the Wheel is spinning about the aXis in the sense indicated, With an angular velocity (0 : 520 rad/s. Answer the following three questions using the choices given; e.g.i if the answer to the rst question is A. and to the second and third question, B, enter ABB. Y0]! only have 7 tries! i) Assuming that the majority of the angular momentum of the wheel comes from the spinning of the Wheel about its axis. what is the direction of the angular momentum vector? A)i B)j 012 DH EH PH} G) None ofthese ii) The force of gravity acts on the Wheel. What is the direction of the torque (Vector) that acts on the wheel about the pivot point? A)i B)j of: D)7j Eyi Fri: G) None ofthese iii) Recall that 1' : dL/dr, hence AL : rm. and Lm\". : LGM+AL In response to the conditions above, in addition to spinning about the axle. the axle and Wheel Will A) precess (i.e., rotate in the horizontal plane) about the Z-aXis in a clockwise sense when Viewed from above. B) precess about the z-axis in a counter-clockwise sense when Viewed from above. C) rotate downward in the vertical plane that contains the axle and the support. Answer::] S bmit All Answers