13.47: Which one of the following choices best represents he /7aa8(cet) 5b izab the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with its rotatioeh7c/ a) bbi a8t(za5en about its axis?

  17.37: Which one of the followyvmo db(8h,:d3ga i ;ming choices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit around theya3;g hmdv8 (,b: moid Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s along thewhoy-wn-yl, e)+, )h8g foe3xpbku j; line shown in the figure. What is the magnitude of the particle’s angular momentylh;u8, xe+o3, wfb)-ghn p )jyoe-wk um calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies the brakes qui:jbx7gspnxrv( 6i0; (8 kcmozckly bringn:(xor0vb 8 zjp c 7(mgsix6;king 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 havye in3);i4 r2,a gcfgoe radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identical. What is e4oai;,i g2)r3y f gcnthe 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 tr k3+vg) too(ghe same material. One disk has radius R while the other disk has radius 2R. Both disks are rotating 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 dis tkggovr(o+ 3)ks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular momentum of a syst-v3-o3 wavnt s9zq q5af 8fv*nem to be const-v qq 3oftn -*539v8afvnzwas ant?

  01.27: A spinning ice skater can increase his rate of rotation by bringing his aftm)p2rdjnl ,ul dp 9.h9-*bnrms and free leg closer to his body. How does this procedure affect the skater's rotational momentumj df)-pn h9u.rllm,pt 9n 2d*b and kinetic energy?

  03.32: A figure skater ol9kjd, qd+0m ,trqb6has 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 mox:hnwgfs47zi)r 7cl. aw20 jv ment 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 r4at/ka8 ae fulnx10sb3g31ehorizontal 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 from tkaxregs1l ue a1ba30 n483/f the hole in the table?

  08.40: A point particle of mass m collides wiks(yi2t(n q mmn:p +r7th a thin rod pivoted at one end. The rod has mass M=2m, length 2yn:smq t+(mri( k7pn 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 ma3s4 mk:ihem- oss M and radius R is rotating on a fixed, frictionless platform with constant angular speed ω0 is3hok4: emm-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?