13.47: Which one of the following choices best represf/dzc8kw3;j b +x 5f; -cswtckents the magnitude of the angular momentum of the Earth (expressed in base MKS units) f x3;5wkwftb;zjkcsc+-8c d / associated with its rotation about its axis?

  17.37: Which one of the following choices best a c)q4ctzt muxm/ttyga1; zgd - 3h71hq1 q1fz/pproximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) atq d;1ztc/huz1-t thc/1mx)fq3 qgm a4zy g71ssociated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5disxx pr1 :uj4ag0k2gt h: 8iba) y1z;.0 m/s along the line shown in the figure. W1:i gx1 ju8bzt)xd 2 aygrh0:;ksiap4hat is 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 applies ag y52r+2ckbt*cc v .:j/,pbgkh*k qtthe 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 iq,c 2 . hvtrgj c *g/b:*kct2k5bkapy+s slowing to rest from Mary’s point of view?

  03.41: Two uniform spheres of mass M have rlm+hua0uv2+ zv )-3gr5w jrcl adii R and 2R. Each sphere is rotating about a fixed axis thllhgam vw-+02 zruujv3r+ ) c5rough 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 wh0lou f09 j*lhl zyvx6by f56+jile 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 tu*56vl+y0h6 yjlbz ojxl9f0fhe disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular momentum of a sysy+jfn0 f, goxxu0;agh07.sa btem to be constantja ,00b. u;7h oxn0 syggaf+fx?

  01.27: A spinning ice skater can increase his rate of rotat7. q g8o08sj/8tagf1ekkqs vi ion by bringing his arms and free leg closer to his body. How does this qgjt.k0k8fa718v gs eso/i 8qprocedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertit -bf/fwy8 tq 64dl5w-ekay5n x6m.uc a 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 q+;hn )jya h chjz,2.vinertia 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 u 7sz, mh( 1:wxrydj/hthe end of a string, moves in a circle on a horizontal frictionless table as shown. As the stri(zmw :dyh/ x ju,h17rsng 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 rod pivoted at one envhf2- 1ehdkr -d. The rod has mass M=2m, length L , and vkf e- hrh2d-1moment 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 fixed, fc+dldsx 8ytqt. aj4( (rictionless platform with constant angular speed ω0 aboutxa8(tsc(j d 4+.ydtq l 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?