13.47: Which one of the folloix(.n* a2d5 d3zdp49ai+gk3az alp fxwing choices best represents the magnitude of the angular momentum of the Earth (expressed in b *z3pad z9i5 ka na2pdf34a+gd(x.lixase MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choic8gaj 0- ;mdqbies best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated wit-agqi j;bd80m h its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a cons ;xag zk10l,zd -1suah74 bhoptant speed of 5.0 m/s along the line shown in the figure. What is the magnith -a4bas zk1, d7zlopug;hx1 0ude 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 applies the br5m zja7q,yp ,6k n0isqakes quickly bringing the bicycle to rest with the qykn5azmp ,sji, q67 0wheels 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 Mary’s point of view?

  03.41: Two uniform spheres of mass M s1hwf6sw44 z m,hdod2have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres62f4szm4whdd 1s w ,oh 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 xaf ejv;q+dugdsy-* , pel4( 4of the 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 momentum of j + yd(ldv4*q es-u,agexfp;4the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular momentum h8j(*rnayh8 w of a system to be consjyrn8(hw*ha 8 tant?

  01.27: A spinning ice skat9 uqff6 *ur;hekpjii;ma: .(cer can increase his rate of rotation by bringing his arms aquea ;uh i*(pm k:icf6.;j9frnd free leg closer to his body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertia of :a ijfni0i;j5 $5.0 kg.m{2}$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 of inertia ofgi 6iy 8m(c;tx $5.0 kg.m^{2}$ 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 ns ao/;- xf4vyon 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 observer ma nvf/s -;xy4oeasuring from the hole in the table?

  08.40: A point particle of mass m collides with a ajib2 e0 ,tfc,pu:m: ithin rod pivoted at one end. The rod has mass M=2m, length L , and moment of inertp 2b:it ejf im,0,:uacia $I=\frac{1}{3}ML^{2}$ . 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 fixed, fr:5w(8r is -inv (ivsplictionless 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 atils(ipvvw( r5: n8-si the same rate. What is the angular speed of the disks at equilibrium?