13.47: Which one of the following choices best represenyi2cq:qpb 3r ybbzo: *ih0;i+ts the magnitude ihycb+po2 byiqz;b0i :*3 r: q of the angular momentum of the Earth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices berht68gx: qf7vst approximates the magnitude of thev:8rhfq7 tx6 g Earth’s angular momentum (expressed in base 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 alot -zuk9iflijl k;mb qh 2.4i*(ng the line shown in the figure. What is the magnitude of the particle’s angular momentum calculated fr *kiu(hzik .fb-9l;it 2ljmq4 om the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicy* tn1y 6-phfqycle directed due South. She applies the brakes quickly bringing the bicycl*ty p-nq 1y6hfe 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 have radii R and 2R. Each sphere is rotatinbk qkub5k:2 40 mhgzietq:1t1g about a fixed axis through a diameter. The rotational kinetic energies of the spheres are idenz5btk01mkqeu1hi :b4k t2gq: tical. 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 ukm.8 q8lby 2jwhile 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 b28y 8kl. uqjmenergy, what is the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What conditioyqwk7b*1l0uz vj:c +( /kudmhn must be met for the angular momentum of a system to be conszvlu/7 +b1d:c k hjk0(*yqw mutant?

  01.27: A spinning icefml ugca d38 7l0vv*2xj;(j vxn xf4(u skater can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotac0jlg v(8 n* u;3fxmvaxdu( 2lf7 v4xjtional momentum and kinetic energy?

  03.32: A figure skater has a moment of inrb 5zljgch( uh4bv5;:su tx: 9ertia 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 inertia ofau,qq : y- tgh7qpu13q $5.0 kg.m^{2}$ 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 end7se9siha o ,7j of a string, 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 ooh ,7 ie7as9sjf the following is correct for an observer measuring from the hole in the table?

  08.40: A point particlfker vi*f35wh ,); pane of mass m collides with a thin rod pivoted at one end. The rod has mass M=2m, lefive5 ;3nah)p r*,wfkngth 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 rotatinei12lnbc5 r;(p 2sv 9;zp arlrg 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/2 is placed from rest directly on top of the first disk so that the centers of the disks line up. When equilib pblrs9;2(pc5 vzr erla;in12rium is established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?