13.47: Which one of the following choices benv+bat l7s7 +blgyon5s fj)*/st represents the magnitude of the angular momentum of the Eart+ / j n+bf* )lt57lsa7ysvnogbh (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following c(l.)s, m kxasvi3hof o y9ea-*hoices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associasav) *m f3(e. ,al o-sk9xyoihted 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 s aq:5j6s m7iznaz4o 5u;xkdo6uh0v m, hown in the figure. What is the magnitude of the particle’s angular momentum calculated from the ors;h z7ijqox,aa6:d 6m54mu noz5ku0vigin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. She applies txyknj6:r3j6r :fy 6lc he brakes quickly bringing the bicycle to rest with the wheels rolkr:y6fl:nyrj 636x jcling 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 Mary’s point of view?

  03.41: Two uniform spheres of mass M have radii R and 2R. Each spq/r s7o . afid2tac9+fhere is rotating about a fixed axis through a diametert+72 /r.q c9fdiafsao. 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 materr+)lst.f 2w2y ,lsg bhial. 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 equa)f2,y2hs+gtr s bl l.wl kinetic energy, what is the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be mp303qxjgef l :et for the angular momentum of a system to be const exf3j:l0 q3pgant?

  01.27: A spinning ice skater can increasewtyc zjdo *u fzfoul+9014fjvgj43 08 his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure af+jj y0 u1*43o z dvj89tzffgfouclw04fect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a my8ccr n:xb qa i/qffbj-511e 5oment 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 moment ivvo0kni *yn.3;lg7s 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 horizontal fr r -19pbz1x)purupd8qictionless 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 observer measuring from -z)u11xp pdqp98urb rthe hole in the table?

  08.40: A point particle q( uh9;9ud5jg o9bmazof mass m collides with a thin rod pivoted at one end. The rod has mass dma;9 ouz b ujg95(hq9M=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 dio;r . d)q)z zntw9sni(sk with mass M 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 placed from rest directly on top of the first disk so that the centers of the dz )n9 )szwtdo(i.r;qnisks line up. When equilibrium is established, the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?