13.47: Which one of the following choices best rek,wb 3(o9(*z l,wonr, c ulzhtpresents the magnitude of the angular momentum of the Earth (expressed in bc *w(zl (w roltonh,,u3z,kb9ase MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the magnitude of thetby; b+any+;6v41wa lix*3sh7m nawg Earth’s angular momentum (expsyhtw m+v;wl1a*4a;x y bbnan7 g6i3 +ressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a co- nb24mxdt jv2nstant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum calculated from the origin( unitbj xnm-22 d4tv: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies the brakes q6ztyh9y74emgq3f f1w uickly bringing the bicycle to rest with the wheels rolling without slipping on the ground. Which one of the following choices best represents the direction of the angular acceleration of the bicycle’s front wheel whil3q9h6m7tyw4f1 geyz fe it is slowing to rest from Mary’s point of view?

  03.41: Two uniform spheres of mass M have) yxwe,m7af 4xwwe3+ (elxf6v radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identicax3fx6xw , w ewy7+4m)faeelv (l. What is the ratio
of the magnitude of the angular momenta of these spheres? That is, $\frac{L_{2R}}{L_R}$=?

  05.49: Two solid disks b4jdqtic w57kh)aa( ; nla7,nare made of the same material. One disk has radius R while the other disk has rad5t4i,bql ;aj)(dan7w ch na7 kius 2R. Both disks are rotating about a fixed axis perpendicular to the disk, through its center. Given that the disks have equal kinetic energy, what is the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular momentum of a system q,3 l1lmnu7b sto be constantq ml1nb 7l3u,s?

  01.27: A spinning ice skate(hhc:2 5*bhglpq9w7o3solh t r can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational m2l3w ohhb* c7lqpt shoh9g (5:omentum and kinetic energy?

  03.32: A figure skater has a momi e..q ri-jtv.ent of inertia of $5.0 kg.m{2}$with her arms outstretched. If she begins a spin at 2.0 rad/s with her arms outstretched and then brings her arms in tight to her body, her rate of spin increases to 8.0 rad/s in 3 seconds. Friction and wind resistance can be considered negligible.
What is the change in the skater's angular momentum as she brings her arms in tight to her body?

  0.33: A figure skater has a moment of inertisaz,.wm 9h) tia of $5.0 kg.m^{2}$ with her arms outstretched. If she begins a spin at 2.0 rad/s with her arms outstretched and then brings her arms in tight to her body, her rate of spin increases to 8.0 rad/s in 3 seconds. Friction and wind resistance can be considered negligible.
What is the skater's angular acceleration as her arms are moved in during the three second interval?

  06.23: An object m, ow63kyrs8ex. ie6 +a+9s(a qixo 7bcctn the end of a string, moves in a circle on a horizontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which of the following is ccte 9r6 x87s+ eycb oaw(.3a xiik+s6qorrect for an observer measuring from the hole in the table?

  08.40: A point particle ozcr65 -i,rtje7 sufv2f mass m collides with a thin rod pivoted at one end. The rod has mass M=2m, length L , and mo7rj ,i ru etv6zcf2s5-ment of inertia $I=\frac{1}{3}ML^{2}$ . The particle moveshorizontally with speed V when it hits the bottom of the rod and sticks to it. What is the speed of the particle immediately after collision?

  09.42: A uniform, solid disk with mass M and radius R is rotatin1 umhi 5hwht4ukso8y1 fi7 j:j8q4 713p qmpstg on a fixed, frictionless platform with constant angular speed ω0 about a fixed axis through its center. A second uniform solid disk of mass 2M and ra m ifjh8 18oh mi wy3j471psp t71qs4kuht5uq:dius R/2 is placed from rest directly on top of the first disk so that the centers of the disks line up. When equilibrium is established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?