13.47: Which one of the following choices best represewfrjv6 )0;s a4 ebz jkhk 18y+a*tb-bgnts the magnitude of the angular momentum of the Earthrw+0kva)b 8bb kt;f6 a1 z*e-ysg hj4j (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the fol;ntq hwv +/9 qp4)41mjwt sngilowing choices best approximates the magnitude of the Earth’s angul)/ 14qns9;wh v+inpj t mw4tqgar momentum (expressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle tralc)r oai2.cj/vels at a constant 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 oa/ c)rljc2 .iorigin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She 4s0z.bh3xjezh4zw+ ui a:*soapplies the brakes quickly bringing the bicycle to rest with the wheels rolling without slipping oohbxz0:iszwe 4.+aj h *u3s4zn 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 of mass M have radii R and 2R. Each sphere i gf(8rfo2m *t k5 5irl4rcmr9gs rotating about a fixed axis r 9o85rk(t* gl c4mmr2fgfi5r through a diameter. The rotational kinetic energies of the spheres are identical. 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 are mnk 7 gkyut/ts5 wvvk;8hmv /09ade of the same material. One disk has radius R while the other 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 ratwm yt //kvg5t0u ;khv vnk8s79io of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular gg;v cce8 *icl(q*3 ghmomentum of a system to be constant?8cq *il;hgeg*vc cg3 (

  01.27: A spinning ice skater can increase hhgx: e 9( t)2x(c,b-, 5gfl ;k eprvo6aiwzeawis rate of rotation by bringing his arms and free leg closer to his body. How does this prh9g ae5w6cel p(t,k, w2e o-f(vxg;ziabx):r ocedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment o9oh*i:v5hziqxz2kom+ 5mba . f 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 i6 z-ip,dpzn .nnertia 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 1v(nk- eige 3sa 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 coe1nivg(e 3-sk rrect for an observer measuring from the hole in the table?

  08.40: A point particle of mass-3f7*;- ffj hihvj*pkf pk5rk m collides with a thin rod pivoted at one end. The rod has mass M=2m, lfhjr; f-p3 *k5kijfvhk*7-pf ength 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 o 8m,yshc j3uo8jht2-radius R is rotating on a fixed, frictionless platform wit8s y ouj2h8j tm,ch3-oh 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 established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?