13.47: Which one of the following choices bedb+h.tj3f) jo st represents the magnitude of the angular momentum of the Eard .oftb3)hj j+th (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best appri9+t 3k ;bsghyoximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated 9 ythk+isg; 3bwith its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a c a3aqm-e(f +d6vi rs)donstant speed of 5.0 m/s along the line shown in the figure. What is the magnitude o) (3m vdres qiaafd6+-f the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applihxs e31cqdnp ;1ts2/cswa:fo8li2i(87 ds rfes the brakes quickly bringing the bicycle to rest with the wheels rolling without slipping on the ground. Which one of the following choices best repres8d/h1tr if182s;7ds :len3s fw(pa2q socc ix ents 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 ra0asxd(tu1 zrd b cl5i/ 9kyb3 wqxi23(dii R and 2R. Each sphere is rotating about a fixed ax(9b0z w5sdi2rda 3q xt3 yib1k (cx/luis through 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 same material. One disk has radius R whi 3wzxahcleic-+,6 4l *e4vt rale 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 kinetictiel+-chew az3 6ac44,*xl rv 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 mozph t+x3oq0;1kf. bf kmentum of a system to be conkbk+ f3.zht;1q0xofpstant?

  01.27: A spinning ice skater can increase his rate of rotation by brii76,udzk, u5/bt ovdc nging his arms and free leg closer to hiski z uvct,ob,67d5 /du body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia of po*k7: iz*cgs $5.0 kg.m{2}$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 mo/ v hych5sr4z*ment 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, gyg0oigw (iymbvxn33 qf0:.; on the end of a string, moves in a circle on a horizontal frictionless table as shown. As the string is pulled very slowly throug3gf3 g xy:n00mb.qiio(;v ywg h 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 thin rodzfjxqr8oae d yppi16 drpg+xr/p* f94+ 900nt pivoted at one end. The rod has ma9qa1*tpjdrdg6 iyx x nrzpof/4p8+rpe9 0f+ 0ss 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,v lqyqf;ml5 8 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 placedfvlq yl q;5,8m 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?