13.47: Which one of the following choices best repre9p no3l aj42/gas( nabsents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associatedsn/3p9go anl42 j ab(a with its rotation about its axis?

  17.37: Which one of the f).f yrz-h0 hfiollowing choices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated wi z0hryi.) -hffth its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s( z)i;vwe)lhz) 4q3skth5f jq along the line shown in the figure. What is the magnitude of the particle’s anqz)h)k lh4fiqjst; (e )5vz3 wgular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applib)bu ( 4br *j6hp,ee-ghqukd 9es the brakes quickly bringing the bicycle to q( gdb-e beh,4h)*9ukprb6u jrest 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 Mh 0oqcn8 (f+n(hy q3uy have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotationyoq 0 (qhc8(+3 unhynfal 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 same matek4dn qqr1(uzyvbz+ 9 t u2;pj4rial. 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, what is the ratio of the qz1z9;ytkrq2bv jun 4u(d+4p angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the a f 50j 6zmeias.emx02ungular momentum of a system to be constant 5.m x6ze jiae0sm02uf?

  01.27: A spinning ice skater can increase his ra/rg j 2jqqjp3 c3vj:n6te of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational q3cjn3 jrgvq jjp2/6:momentum and kinetic energy?

  03.32: A figure skaterf *1i:rsxmi5n has 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 inerrvjf*j 1 )ctq c-wj:i2tia 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 horiz hhqgo/1sv.y/ontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which oh/ys/q1gh vo .f the following is correct for an observer measuring from the hole in the table?

  08.40: A point particle 8ire yy)/.8nye4gvo yojg- +a-mu +kzof mass m collides with a thin rod pivoted at one end. The rod hayoyvyn i+e8 je mo84+g/.u)-yarz- kgs mass 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/ptxup;w2 z9m;a svi9)g nl w5 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 disks line up. When equilibrium is established, the disks are spinning at the sam 9lw/tn axi52; su9vzpw); gpme rate. What is the angular speed of the disks at equilibrium?