13.47: Which one of the following chole/h7bc5 x aia0,t 2r dnhe99yices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units/e0nheablta2c7h 5x,r 9y9id ) associated with its rotation about its axis?

  17.37: Which one of the following choices p5u:md (o4g .n/iu,ijqf n(t;(rru xzbest approximates the magnitude of the Earth’s angular momentum (expressed in base MKir o:unx4((d i(,z/.mj u;nrqfup g t5S 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 ab ag0r -jk qe+vg 7f+ exxavi4e*/5ij)long the line shown in the figure. Whfq05 jje* v7aixkg )4/+ee rvbag+x- iat 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 South. She applir liy 3u+xc e;6k*;eakes the brakes quickly bringing the bicycle to rest with the wheels rolling wit6xuc;r*k3 eaie ;yl+khout 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 ha .0)yk9e r;usjbdc0cb ve radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identical. What iu0jb. yebs ) k0;ccd9rs 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 c r 2)cr;8).g ymuxs/ki cha;,*gbivzthe same 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 is the ratio of the angular mchc g)xs8by ,amv ;*krii ;)u./ rzgc2omentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition mus 6km6o5 sh bux4ww8,th49 rhsqt be met for the angular momentum of a system to be constantohk46hru xts5 4qww9bsh, m86?

  01.27: A spinning ice skater can increase his rate of rotation by bringing his wmtu*/d)p ;ekp7+ e0tstv+xh arms and free leg closer to his body. How does this procedure affect thev+me;d0ppe h7)utws *x k/+tt skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia v(y2 eig iv.y-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 kzuxww74 0pxx j0ze/ju0z3i 4 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, om6m 5/oczvc 4yn the end of a string, moves in a circle on a horizontal fric5o/mcmyz6 4v ctionless 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 the hole in the table?

  08.40: A point particle of mass m collides with a thin rod pivo7j3kw2ebx- qrted at one end. The rod has mass M= ew37xrqj-k 2b2m, 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 on a fi9g;sn dk1 u3f)fcqp r8z(kyj*xed, frictionless platform with constant angular speed ω0 about a fixed ax kku;3gpn) r 9qfscz1f8( *djyis 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?