13.47: Which one of the following choices best represents the 2 leggc gee1:.magnitude of the angular momentum of 1ele: ggge.c2the Earth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximatx3se 5fy4p5tnnb. 6b kes the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit around tb nt34fs 5e.bp6 ny5xkhe Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s aa erntsk f9(m60l5vbl k+ zk rr6)p+;glong the line shown in the figure. What is the magnitude of the particle’(mnrsgklrpt0ek zrak f b 596 vl;6++)s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her biqc .yt-pv+ yfwcf25n9cycle directed due South. She applies the brakes quickly bringing thew qfy c-vt y+.ncf259p 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 spherg i2;z9:zm;( llg eugs/+wq ages of mass M have radii R and 2R. Each sphere is rotating about a fixed axis through a diameteri:mgg(g qw 2zsu al;+el9/gz; . 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 mad cdgbni;xj. zwg;57e-bq + jews**.dde of the 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, w g diwbxw+ dzede*jc*.b5g s;-;nqj7. hat is the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angu ;9c 6iveucph(lar momentum of a system to be consta9 6ue p(cic;hvnt?

  01.27: A spinning ice skater can increase his rate of rotation by bringing hihi0, o* t6fu nrxkt6(ks arms and free leg closer to his body. How does thi6iu*6,otkkr 0n ht f(xs procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia of )n(tn99aarbv o5y 6a2w z5 jmt$5.0 kg.m{2}$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 inertia o-o; y7hggl5: e f6*z,tzc jcrhf $5.0 kg.m^{2}$ 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 stringz zp8;zj) qnj/1 xogx7, moves in a circle on a horizontal frictionless table xq7zj )nzpo/ 8g ;z1xjas 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 axs5g hu l :;; s;cg7ggsrv/6ew thin rod pivoted at one end. The rod has g :/;6sx;5;elgvr g scgu7hwsmass 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 iscp/2k) domh(dj* vmy6 rotating on a 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/ hy (*p2cm6 ov)kd/dmj2 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?