13.47: Which one of tio95 lbv0 1fhphe following choices best represents the magnitude of the angular momentum of the Earth (expressv9 5b01lp fihoed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the magnitudffie 7u6: + sulqk.cr9e of the Earth’s angular momentum (expressed in bu.r9flsci7uk qfe+: 6 ase MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s along the line shdo8t 3o/h ir.lp3 6qehown in the figure. What is the magnitude of the particle’s angula 3tpor i/dh qlo.e6h83r momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies thqjv /:df+s,hb e brakes quickly bringing the bicycle to rest with the wheels rolling wdb+: j q,sh/vfithout 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 s,lq1, ,whsada9 wc(ln+ n62kmxvrej6ks :xe,pheres of mass M have radii R and 2R. Each sphere is rotating about a fixed axi6sl126,daakvwe +(m wxjclk r n,,xhqe :n,s9s through 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 samezj akd3qbspm b- 3a(5jx mc2/9 e-lz5q 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 3la93ec(/ baz-jq -jds5mzx bk2q p5mits 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 angular mo px95fcg.ad4cmentum of a system to be constang49x5cp .cd aft?

  01.27: A spinning ice skater can increase y( 6ty jyksl72his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the 6(klsj ty72yyskater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertiady /y9w6ckbrvz19is9 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 ta: b; +xsa.mx- 1az5jisgdi,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 st (m(rjwtl: gm*ring, moves in a circle on a horizontal 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 observ(mg tw*r( ljm:er measuring from the hole in the table?

  08.40: A point particle of eu8.olz(q gh)mass m collides with a thin rod pivoted at one end. The rod has ohg() qzu8 .lemass 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 dii2* jl+4v z)pkb.mfrs8u jax;sk with mass M and radius R is rotating on a fixed, frictionless platform with constant angular speed ω0 about a fixed axis through its center. )s.+z*pl4;ujba8 fkm2i jvx r 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?