13.47: Which one of the following choices best represents the magnitude 6f0pr)+py pun 6 ov;ll of the angular momentum of the Earth (expressed l;o0l)6nrv ppu 6+pfy in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximatenuc -zeop ixp1(.1s-x s the magnitude of the Earth’s angular momentum (expressed in bas-ouxzi.1ce n-(x1 pspe 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 th1zsxolb1 k9vp9ul; - ke line shown in the figure. What is the magnitude of the particle’s angular momentum calc k lv1 xsb91;luopkz9-ulated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her a k; r*se/lnp ,q9re6sbicycle 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 direction of the angular acceleration of the bieps6;rn ls,r9ae /kq *cycle’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 shyq ix) 6,5mem chk5so04lco69yw8 oqphere is rotating about a fixed axis thr 6)com5y w5hho,isq6 x m40ock 98ylqeough 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 vzge+7.9sk :( t (n:s+8kbms q nuoekrsame material. One disk has radius R while the other disk has radius 2R. Both disksu(8bem+ 9(rkn t svq s+.nzkeok:g:s7 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 the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the alp k:jk gm8u18l f p1,4e)lbmpngular momentum of a system to be constantflb, mm pje k:8gkp )lu1l8p14?

  01.27: A spinning ice skater can increase his rate of rotation by bringing b7,4b 9)xtx ggr uht)uhis arms and free leg closer to his body. How dx4b)b xu7r,h )tggt9uoes this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has ad+ x 9t5b(bt(nb;+qcdrv//n k-l ovnq 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 9xtw7 lz/: fppg19 ftka 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 string, moves in a circle on a horizontal fr1; ( 2(flqps cspk8 kheaxj0o5iction0 15k (28ehflakqs o;pspjc x(less 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 observer measuring from the hole in the table?

  08.40: A point particle of mass m collidesn )f:.jwxvwz x7w5uv4./0 (ia8zkudr bf2btc with a thin rod pivoted at one end. The rod has mass M=2m, length L , and moment of inerb.(ackbxfivd.2w 5 8zjfznwxr)w vut0:7u4 /tia $I=\frac{1}{3}ML^{2}$ . 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, so4zj,t chvmnd :jp6m+0m0u2u blid disk 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. 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 di dmjpu+ucb,n6tvm0 :mhz024jsks line up. When equilibrium is established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?