13.47: Which one of the following mw*re*i+ei7ekrlav2 zz ).5 , ;qhhnpchoices best represents the magnitude of the angular momentum of the Earth (expressed in bap ;l.vi zerkzqme7 e 2ia*,+r)hw*hn5se MKS units) associated with its rotation about its axis?

  17.37: Which one of the followi-r-zh . ,2f m/bvsgrgg 3:iyalng choices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit around the Sunrrm,2-ls/y3b.gvgz f: gi ah-?

  11.40: A 2.0 kg particle travels a-rr /* ffi l8zq4;ksjxgz g0z,t 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 calculated from the origz s0k4; -i lgjqfgrf/ ,8xrzz*in( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her jh)//.e dz6fe ioj1gwbicycle directed due South. She applies 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 direc1gjd /jzif6)o /wh. eetion 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 ie+gr6 vk .ww ncmr21*ss rotating about a fixed axis through a diameter. The rotational kinetic energies of the sg.cw2w*v msk1nre +6r pheres 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 disv lsf:w)yl/cr.7rmkw 4z;eh( k 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, whatklsfywle h/; :wc (r.z7 rm)v4 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 systemltw5bitf)4a.ug9 drjl w) -7y to be constawla)bd7j)4f 5r l.tg u9-wit ynt?

  01.27: A spinning ice skater can increase his rate ol.,dddndb r; ha. t-d:f rotation by bringing his arms and free leg closer to his body. How does dd:-h;bltd .n.,ardd this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater haslml3et9+ ne g2q6r( uv/(u-f d xysr(o 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 inerqss9 .k0.jxxw9,7kj 6 l1vnsxkg l: 6+oxxjw btia 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, move)6i u fri3mx6*d 1bkaes in a circle on a horizontal frictionless table as shown. As the string is pull*k)a1x mer66duib 3f ied 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 en*l jj c-z28wknd. The rod has mkn z8w-j* cj2lass 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 radius R is rotating on akuo.3 0 groh;o fixed, frictionless 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 our k;og.o 3h0of the disks at equilibrium?