13.47: Which one of the fosmd,se+c t,7/ s xoi1ullowing choices best represents the magnitude of the angular momentum of the+s1,e/m 7stocs,xu di Earth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices bjax v7 h5t 2i9*7g 1je(sa3htps gryb0est approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated wihpxt 0ae5jh * 7sab gt21y(j7 vs39rgith its orbit around the Sun?

  11.40: A 2.0 kg partic 3f8g)le5 z,atclg(sh (;erkpby :f2 wle travels at a constant speed of 5.0 m/s along the line scf(g 3ztl fa2ew,()s rlg8eb pk;h:5yhown in the figure. What is the magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle dira:uc xj7f(ct7p ur)q7 sa2nh;ected due South. She applies the brakes quickly bringing the bicycle to rest with the wheels ro pu7fujnc( x t)h7q; 27sr:caalling 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 radi/*::yzvhf ti ri R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotatio/tzy h vi::r*fnal 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 radw kn3hy.33+z x z9p gj+-o.d9jhktrtx ius R while the other disk has radius 2R. Both disks are rotating about a fixed a-h3dz k ojrw+h3kz9t+ np. xyjg 93.txxis 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 an esa4f, rt-k li.(5gyggular momentum of a system to be con5l-4(.gfrg y,akse tistant?

  01.27: A spinning ice skater can m1wrskbhw-4 /increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotatiwm/skbw -4 1rhonal momentum and kinetic energy?

  03.32: A figure skater has a moment of inerk24 t4e gitop/tia 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 ha*g/ctl) zhl)9 czofm8s 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 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 horizontal v 7 4waq)f,ba9dbw+hvfrictionlesvb9a,a7whq+w4bfd)v s 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 from the hole in the table?

  08.40: A point particle of mass m collides with a thin rox (l-9z 2xk pxcvfii7ef wt.t. rtf295d pivoted at one end. The rod has mass M=2m, length L , and moment of ine2 fitv(t2x-ixkcp5 9wf. 9 . rtfzxel7rtia $I=\frac{1}{3}ML^{2}$ . 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 fixed, fru 5 hm2qn)7ovtictionlesq7m)52unvhot s 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 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?