13.47: Which one of the following choices best represents the magnigzm2ac 1b7c w.jlac18tude of the angular momentum of the Earth (expressed in base MKS units) associated with it8j1 ga.1ablmz c7c2wc s rotation about its axis?

  17.37: Which one of the following choices best approximates the magnit/oado.54brp-52 vqc+ bmns tr ude of the Earth’s angular momentum (expressed in bqn o5+rdo.mb 42/ -rsatpvb5case MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at8ej*z:)r*ax qm h4(vttor:su sf;g:c a constant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum caar(4ct o: gt:fqr:jz*s s;)vx uh8e*mlculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies the brakes qudrh5am + sy*4bickly 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 is slowing to rest from Marr5y*dh4+ba s my’s point of view?

  03.41: Two uniform spherea/ mj*pi vqk,y-lv 2v.s of mass M have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kine q .2*-vkvp, jyi/alvmtic 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 samems-w3fxq q8 ;m 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, through its center. Given that the disks have equal kinetic energy, what iss3m; qw -qx8mf the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular mofydv ujft;z0ce u:j;bdw6d j: 05,,pementum of a system to be con j6:0;de pdfzvjubfct,jde;w, y0 5u:stant?

  01.27: A spinning ice skater can increase his rate of rotation by bringing hfjl6*5*cd* qt ovpe u0is arms and freftod c*q0pul*5v 6 je*e leg closer to his body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skate-5k ;k vn3nr:ykoaz,fr 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 hasa wgb+bnq+1udk*srq 6zb .-(b 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, osd 5kf:;zo pt0n the end of a string, moves in a circle on a horizontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which of the following is correct for an obserpsdok05f: t z;ver measuring from the hole in the table?

  08.40: A point particle of mass m collides with a thsh2::7sknou(reh2ag wesl 5v :;h4s0+ b ggbrin rod pivoted at one end. The rod an hgug+:bh2kses;s:wr0 vbl7:r hg (54e2oshas 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 is rotating xtk 0*.dmb/,0c wrjxt 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 spinnitx.x/d*0,0j mt wrcbk ng at the same rate. What is the angular speed of the disks at equilibrium?