13.47: Which one of the following choices best repr l3eigwus6d m9.in54 ;nj(atyesents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with its rotation abouttg.a6 jy5ei(4 md 9lu;nwins3 its axis?

  17.37: Which one of the following choices best c :ajk, woie.89lql1po6ua7aapproximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) assock8w:,cuoq pi91 6o. l a7jaleaiated with its orbit around the Sun?

  11.40: A 2.0 kg particleu i8+aqrq;ordha2 /,p travels at a constant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of t ia p a8uqdrq2/,;o+hrhe particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies the br:l:p(qnj9qf4j nzf l:akes quickly bringing the bicycle to rest with the wheels ronn 9qlflpq::(jj fz4:lling 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 while it is slowing to rest from Mary’s point of view?

  03.41: Two uniform spheres ofi:z36 ck 0yg*k f83ow4kmfw ck mass M have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identical. What fokmk 6c4gfkc 3k y38*w iz0:wis the ratio
of the magnitude of the angular momenta of these spheres? That is, $\frac{L_{2R}}{L_R}$=?

  05.49: Two solid disks are maden90d: : nbzhpx of the same material. One disk has radius R while the otherd::h nxz npb09 disk has radius 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 fotbu6t(bj68v* klyubc;q j.h6r the angular momentum of a system to be constanb*c 8 ;6 j bqbtu(vjy6.u6lhktt?

  01.27: A spinning ice skater fqlt(v-updp 3.1ipn7 hkx/ 2c can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect thp cvuh i37fn/1-qxp2d .kp lt(e skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of97 ev1gx+ tnmv 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 o(x av -dm c1 rou,ncu (jur1ht(x(18fbf 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 skater's angular acceleration as her arms are moved in during the three second interval?

  06.23: An object m, on the end of a string, moves in a circle o)8hcr* u vl5mh /57ddz4u:ifpvf za)un a horizontal frictionless table as shown. As the string is pulled very slowly through a small hole in thed riuvva5 d)4 p*87u:hlz uc/fzfm5)h table, which of the following is correct for an observer measuring from the hole in the table?

  08.40: A point particle of mass m collides with a thin rod pivo6z+h*oh a a(a 7rwtsw)ted at one end. The rod has mass M=2m, lhhosr(w 7waz6*)a a+ tength L , and moment 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 rotat3 m md6xpr*dylr -n2c3ing 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 radius 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 establi*rc3m -32 nyx rdm6dlpshed, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?