13.47: Which one of the following choices best reprep4.m ynapz):obe6u z +sents the magnitude of the angular momentum of the Earth (expressed i+:ey6pp4z.ob uznm)a n base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the magnitude of th:+ha/qmph ren83v satk3 24 eqe Earth’s angular momentum (exprer8 e4ne+ kpa 2hv/t3a3mqsq:h ssed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particl8o 9; gt2p.udym fz,wxe travels at a constant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of ty; 8 gomu,p29zdfx.wthe particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due Souyvyty/zz,2j*iz 5z7dc i ,oa+th. She applies the brakes quickly bringing the a7zi+5yi*ty ,zczy/v2 z jd ,obicycle 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 have radii R anza ai6q 9ur1*ebz-p 7 ec)ldn1f,m)vvd 2R. Each sphere is rotating about a fixed axis through a diameterqaez al,im1 n r-fb)e)udp7* v9v1c 6z. 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 made of the szcaj5 (iw5q, 9atnr7 vame material. One disk has radius R while the other disk has radius 2R. Both disks are rotating about a fixed axis qraiw57c (vaj9nz5 t,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 to be ,xf e5qjy)ir k;k-i,t constanet5k fy-i;jiqxrk,), t?

  01.27: A spinning ice skater can increase his rate n0b,ry;turmnv7* 3sm of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational momentum and kinetic er,mny7;v*ur nbtms0 3 nergy?

  03.32: A figure skat1ys74xdq/w m wg; iyog 1yu,i:er has a moment 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 ix hiohi )e.g0z0*l5henertia 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 th*)dxf* zl hb2ze 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 correct for an observer measuring fromdhlz**zb2 )xf the hole in the table?

  08.40: A point particle of mass m 6rnrnlbwzd+ m85; rt )collides with a thin rod pivoted at one end. The rod harz mwn8 )db ;nt+r6lr5s mass 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, soliib1fdry;vwq itcr:w y7 6(:w (d disk with mass M and radius R is rotating on a fixed, frictionless platform with conw :ct6(i;(qyw1:7vf bwrrdiy stant 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?