13.47: Which one of the following choiu1rf16x 7w ic -lygyt-ces best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with its rotation abou-6r-gi lwyyuxt7 fc1 1t its axis?

  17.37: Which one of the following choices best (dobxt11t k* gzex) s7approximates the magnitude of the Earth’7z 11(kbsx egx*t )dtos angular momentum (expressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travel )be+x65 yvmo irzm p6x,1gmq/ sw7oalf.a)p1s 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 my .wsaz /1oa),xioex61qp 76ml+r 5g)bmfpv calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She ahl66q* rpkq/x ,du)z k)ov/ 7hsgcw*dpplies 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 * qw)clh)ud qh*6k7rks godv/zx6/p, 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* tn.6skbit, h is rotating about a fixed axis through a diameter. The rotational kinett.ni6hbt sk*,ic 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 radtj2 b- .oft be4j1.zxxius R while the other disk has radius 2R. Both disks are rotating about. . ot xb2f4j1t-xejzb 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 mu8 2tp y/(empetst be met for the angular momentum of a system to be const(t m/pe82 ypetant?

  01.27: A spinning ice skater can increase his rate of ro 4 kt xcento6*xyki s2s9002cc:p0wf vtation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rottnfisow 2k0:xycp042tsc*x 9 e 0c6kvational momentum and kinetic energy?

  03.32: A figure skater hatr9wc7q 0x5e ns 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 774kp nis )gnuinertia 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 thsdn6 c+gprgir ,luq/n 0+i.9fe 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 thilg ir. 0fd,/+g 6su9+nrpnc qe 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 one f osv,/z04unrim -em7end. The rod has mass M=2m, length Lnr/i4z7eu fm-0v,mso , 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 rotating on a ftv okl r4qi;zst 27:o)jg/.1s hpcf r*ixed, frictionless platform with constant angular speed ω0 about a fixed axis through its center. A second uniform solid disk of masrk4cz/1;*2sfisq o:j7orhlt p )vt .gs 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?