13.47: Which one of the fx q rgi9,.cgua2y5xq2y1yv q4 )temh8ollowing choices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated wm2r qih y91uq8tg4 .qvge yxc, 5yx2a)ith its rotation about its axis?

  17.37: Which one of the following choices best approximates the cmr63sqjvj 2 1dlsbc:8ax/3 wmagnitude of the Earth’s angular momentum (expressedr23/w:sbslajcq 1v d3 cj6m8x in base 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 line s9po8 -4 ofktxjuf7x)7qq7adyhown iok u4jf)oq7fd 89xp7t yq x-a7n the figure. 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,phftzy, h g0wamz; 6 9m,(dki South. She applies the brakes quickly bringing the bicycle to rest with the wheels rolling without slippingapftwhdz zk h,, ,g(90;m6yim 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 M have radii R and 2R.+da zaap 3neeyfskej) ); :v:by 5pl81 Each sphere is rotating about a fixed axis thr+8v :3 njds;efb le 15ezk)a apa:)ypyough 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 75buh d /jr;zshas radius R while the other disk has radius 2R. Both disks are rotating about a fixed axis perpendicular to the disk, through its centezhsj r5/ 7db;ur. 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 e9*tqh- ueaxj- 2 gji*of a system to be constae **ueatqj2g-j i- h9xnt?

  01.27: A spinning ice 1a4) 3pxuob wdskater can increase his rate of rotation by bringing his arms and free leg closer to his body. How does thisxo )w4p3d 1bau procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inavx-ec,kp/,gex wf)j696cxs )ko6 zy ertia 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 hg2q ifuk39 nq5as 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 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;yr1dp) a9 r lq8vd sra50io6zontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which of zr vd6rs0ra l qpd )ao1859iy;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 jlv8q/5 z+b5y0xti f7sfvt7 opivoted at one end. The rod has mass M=2m, lenf 7xbvto/lzsqt5j5 f+8iv y70gth 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 is rot9fcx4.ik;11wgo bw(t .q.nblzv 6oubating 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 same ratw 1ok4bc vg 1zl;ioub w6qfn(xb. .t.9e. What is the angular speed of the disks at equilibrium?