13.47: Which one of the following choices best represexb n4z6a*b5f(k9 jls rbj0x;g2jy;q rnts the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with its rotation al zx(r;j frb jgn6bkq20y*b 4xsj9a; 5bout its axis?

  17.37: Which one of the following choices best approximates the magnitudh x/a7gto xq(ho*il ::*g8xsbe of the Earth’s angular momentum (exprog *oihsx q*8h/: txl(ag: 7bxessed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s alond(2 kmcku1vxnz7j5r+ g the line shown in the figure. What is kx(kju7 c15z+dv rn2m the magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She appliess denmayo)o8k58.748liawy u the brakes quickly 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 while it is slowing to rest from Madw888eyomual osn 57iay4.k)ry’s point of view?

  03.41: Two uniform spheres of mass M have radii R and 2R. Eaqqr(a hbwv,)ho.eaa.gg)x dgr -yac-,5 q8d 9 ch sphere is rotating about a fixed axbd(o, . aq)aqy.ga 8 vhg)5ch r ,ed-xqrw-g9ais 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 made of the same material. One disk has radius R whgg 3pionmddc3,+q;. lile the other disk has radius 2R. Both disks are rotatingg33 ;op+ m,.qdic dnlg 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 ee ce 3*t(oqdhzw,+tnw) +p7xsystem to be constanhe+ce 3(o+,t* xze q )wdpw7tnt?

  01.27: A spinning ice skater can increase his rate of r*a,fs pzj)9uf 9ln- nuotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational momentum and kinetic energaz9ju 9 )s-l,ffnupn* y?

  03.32: A figure skater has a moment oflt8 k4 ca4h)c;vn6gqr 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 inert6 tu m:;n)g;xyadn )luia 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 batn8e k/j-qw5d831gwrbf (a a horizontal frictionless table as shown. As the string is pulled very slowly thr5a1bdt/n8a - bke8q 3 rfj(wwgough a small 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 collidk0bsz e-bphq/ihb4 -)es with a thin rod pivoted at one end. The rodi)4k esbhz b- /bqp-h0 has 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, solid disk with mass M and radiuhb2 3wv5d llv h+j,4vzs R is rotating on a fixed, frictionless platf h dl5j,vb v3lzwh+42vorm 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 established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?