13.47: Which one of the following choices best represents f j h,caob.+g9 the magnitude of the angular m+9aoh., fj bgcomentum of the Earth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choisgvngf51 /4ctt kza:d bis(n -+p3o*eces best approximates the magnitude of the Earth’s angular momentum (expressed in bo 4eavsn3z*1(gnsfbc kd /g+-t:5pi tase 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 the linsq:7u;r ezew)en(( sge b h43ae shown in the figure. What is the magnitude of the particle’s angular momentum calculated from the o ) ee3(ne;swue4s7:hg a( zrbqrigin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicyc(ycaym y96 ajt2 yl1jfco0d54s8 w4ylle 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 bicycle’s front wheel while it 0j1tj syw96f ayyld 4c lac2(m54y8yois slowing to rest from Mary’s point of view?

  03.41: Two uniform spheres of mass M have p6:-(kakefv-sg(l:+eai 1nz jth( r cradii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic (j--la:t 1ipzne+c (hgafkkr :e(vs6 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 f c;.;3lhtx h:c - 3l hciyve3on.-xpjR while the other disk has radius 2R. Both disks are rotating about a fixed axis;.f3- -.ilxnc :vtopj;lce3h hhx3y c 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 fo5l*c b ;istnjud+j3.cr the angular momentum of a system to be consjij;c nlctu+d5b3 * .stant?

  01.27: A spinning ice skater casyu73 m +m)gi, jufk:8;bxhnjx 5l8pin increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational mm)g+ x,nujh3s5 myjfbp88 x7 ;l:ikuiomentum and kinetic energy?

  03.32: A figure skater has a7q;r7mw 2cr tp +9c/p mjduc0r 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 momenf ns1h94tnofzwt7pox 95/3wrt 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, e:f*co(z- ;as ug1givon the end of a string, moves in a circle on a horizontal frictionless table as shown. As the string is pufvg ( aoue gc-;1:zsi*lled 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 thin rod pi8p u5q+ya aja4j.b*vzu:/whrvoted at one end. The rod has mass M=2m, length L , anz4jv8hwj/aupa q b+ .*:u ar5yd 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 Rg9 pj6i2xw ,igex h2+z is rotating on a fixed, frictionless platform with constant angular speed ex x,h9g62j pi+i2wzgω0 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 same rate. What is the angular speed of the disks at equilibrium?