13.47: Which one of w) d/o7 at0tlithe following choices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS o0ita/wl )7t dunits) associated with its rotation about its axis?

  17.37: Which one of the following choices best app*-a2hbzx h bww cz:b0 ht3;v0xroximates the magnitude of the Earth’s angular momentum (expressed in bh 0zb*t vxhwb -0hwcx2az;:b3ase MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant s;2h9p24hcxrihz j4 5xc wcbc ,peed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum calculated from p49i; c wchcxjh42xrz,ch2 5 bthe origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicychjwqrmbtsi3 )8qtn(/fr;os( 1 :;ykzle 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 choices best represents the ow8rf(1kh;snm(i/q r3bq:y z )st; tjdirection 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 rageav 74vk p slh1k(t/-dii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres arah7 lt-vskv/ g1k4(pee 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 s7( 7dhfwbyp /h i-z6v3*rvb tlame 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 the6zv r(plybd7 /*3bwfih 7h-tv 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 be met for the angular mo 5ren.jhdsptt -5v8 *nmentum of a system to be const rt pt *nh8-nd.5jsv5eant?

  01.27: A spinning ice skater cas. us0vg2- lotn increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational momentum and kinetic en-2ots gvsl.u0ergy?

  03.32: A figure skater has a momenwrq 98w, or3tkqb3j:oi gb-;it 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 .gxn tq5g4o(4u 7.qkwandf2 ma 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 ofqjg0*rn5) f2sh(mb5mhop3 o,w; zu ju a string, moves in a circle on a horizontal frictionless ta mmojujfzr,gn 25p0h5)o;( h*w3qsu bble 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 jw4 lc*ci5 sy /:;ttqurod pivoted at one end. The rod has mass M=2m, lengti/ c;*4utsl 5j tw:cqyh 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 mas29vqg64o j:u ovgpu dgb3 u92ls 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 rest936v :2pb gu4djug9lvoouq2g 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?