13.47: Which one of the following choices belcbp )e -l rrzk4;a0*phc,i9gst represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associat, ; pil*cc)al0 prgb4h- r9zkeed with its rotation about its axis?

  17.37: Which one of the following choices best approxi.tkfj,sj 9:y iu 9m,m ammz9r(mates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit arout9j muk imrmam (z,,:9f9yjs.nd the Sun?

  11.40: A 2.0 kg particle travels at a cor4x ,4,j4qha jj-krconstant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle,h,4 qa rk r4-xjjjco4’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycletdzfk nyjw 172,t *vjwz3vs3; directed due South. She applies the brakes quickly bringingt2*3wjs71 zwv tj,f zk3vn;dy 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 while it is slowing to rest from Mary’s point of view?

  03.41: Two uniform spheres of mass M )w1 psb.wje0nhave radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are idenpb1w. sn) ew0jtical. 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 diskbnsc l0scptvg: o*:y g.e k0, 6cav0-os are made of the same material. One disk has radius R while the other disk has radius 2R. Both disks are rotating about a fixed ngoa:: g, cv6 ye0co v -sbkl.*c00pstaxis 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 81yzdi1 a:lxf4 f)qfcyn.e /as;lit.for the angular momentum of a system to be constans8/i.1 .iazlcna ef 1x);fy4d qtl:yft?

  01.27: A spinning ice skater can increase his rate of rota,( mt/fwv d4+pe jj) h dd)c:pmc(o6qwtion by bringing his arms and free leg closer tvp6o(mjm)fq)hcd t:ec,d( +w/pjwd4o his body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia opp qah7(xl a+;f $5.0 kg.m{2}$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 7cuct .-.qrami+v wn8 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 on a horizo r8 a-fl cmm/i5-(kbe 4bn;-mldpzf .lntal frictionless table as shown. As the string is pulled very slowly through a smalakfrnld.bm-l- m5;imcp4 8 lb-(f ez /l hole in the 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 pivoted at oneio2s3 9h):p c jdoicf4 end. The rod has maos h94 opc3idc2:f)j iss M=2m, length 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, sol)v.paog8tx /o3*e/c b zvx;ueid disk with mass M and radius R is rotating 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 cu p)8 o c*avzxet//g;ex v3o.benters 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?