13.47: Which one of the following chq nns yk-n)24b *hfv*roices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS uv2 h*nsnn-b r)y fk*4qnits) associated with its rotation about its axis?

  17.37: Which one of the followw 5exka/ix8a 3ing choices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) assocwax 8e5k x3/aiiated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.qq b/dxa356300snha(eqc xqb 0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum calculated from the origin( unbqq/s ceq (n6db0hx qx35aa30it: $kg.m^{2}/s$)?

  11.35: Mary rides her bidp4y x 6l:tq8i cs68nvmoh5*acycle 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 choiytman6 dl 86vq 4c5p*i:hxos8 ces 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 l+us8 6czvfp *w. :zbbhave radii R and 2R. Each sphere is rotating about a fixed axiszlz:spvcb *b w+6.u8f through 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 mv)b23)bf-qqa p fzl-xaterial. One disk has radius R while the other disk has radius 2R. Both disks are rotating aboutx lfb qb-)f)-z vp23qa 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 momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must saf; 0vy(n df2be met for the angular momentum of a system to be cons 2v(ffy0; asdntant?

  01.27: A spinning ice skatea7d9h:18 nege+/f zi .wdsylbuftl;v 7 w; -tor can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure anwvf1 yz;- bdde;uf7 78st:lh9gt+i ow/.e laffect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia of *0i,ccy wtv b($5.0 kg.m{2}$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 a6s 7nv;ahd(bh 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, xv7ywgx : ci7 wf,) :nxi*erw;moves in a circle on a horizontal frictionless g7nwxxx),i7r;e: *yvwc: ifwtable 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 :+9ly3qhdryn mass m collides with a thin rod pivoted at one end. The rod has mass M=2m, length L , 9:hy r+dq3yln 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 fixd4-odx7* wppiok )( gted, 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,d)g p(p7-tkdi4ox w *o the disks are spinning at the same rate. What is the angular speed of the disks at equilibrium?