13.47: Which one of the following choices best represents s, 8smnq /2ocl the magnitude of the angular momentum of the Earth (expressed in bason, /mc8s2l qse MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best o- a;lmb /*zyo -ya+gbapproximates the magnitude of the Earth’s angular momentumamza +;bloy*--b /ygo (expressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg partul w(woo; v.6:y4l1q wj5vjhticle travels at a constant speed of 5.0 m/s along the line shown in the figu(ol5 vw4 qw6;j wyl1t:juoh.vre. What is the magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. t hwe3 9;4(6xdrsks: /)eef loeb fm9fShe 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 terx 9) fwh/3ksbsled;ef 9 m :eo46(facceleration 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. Eachszykz 9 f4ne93 sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of9 9fyz3 nsekz4 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 lwsb pq0c,qo pvvhfi5, 9/ x/hd)b- sc-ir);pthe 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, throsc)9 ,q-is/qh /f c0hi;-vr 5bodw p, pxpvb)lugh 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 angular momentum of a system to be ckdp0t c y/8t:vzk+ 1t7 aapd2jonstant?zdkv7tdk:c t+a1 y/a8p p j2t0

  01.27: A spinning ice skater can increase his raigh4 dzvi4 no0 lnlv96-,uze+)evh .yte of rotation by bringing his arms and free leg closer to his body.i94 )oyvvhl e6nez.4in 0ugl v,dzh-+ How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater )t( 2pc k uno0ws4i;wkev(v.mhas 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 momen qnno/yzq6( u0qn(s5wt 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 horizoxkr-ks ir7k dwo t*,)5ntal frictionless table as*wri), 7x5sk dk-otkr 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 a p; *tpc*tc*im(i iqk7 thin rod pivoted at one end. The rod has mass M=2m, length L , and moment of *p( *iti7ki qcmp;*tc 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 rotast0a4g)m o vbz;ud+g8ting 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 gm) gu+va;d 8to40 zsbthe same rate. What is the angular speed of the disks at equilibrium?