13.47: Which one of the following cht tyf jlxa)0ahsq+9v0t8d93y oices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) +alf8 )jxy9ytdq3v s 0a h90ttassociated with its rotation about its axis?

  17.37: Which one of the fo w7vh2 s6aprh*llowing choices best approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated hsvrh*p6 w27 awith its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 mc00k4i gsf:or wnjt, 2be4o8u/s along the line shown in the figu8co4ng,0 j keu4siow r0tfb:2re. What 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 k;yz a+09oqe(nrogbu f9m54s South. She applies the brakes quicklymya+;f r 4e9gn5oq9ousbzk0( bringing the bicycle to rest with the wheels 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 have radii R and 2R. Each sphere is rot e(zk2en;e;opating about a fixed axis through a diameter. The re(;oknze; ep 2otational 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 m mbn4b(f9u(/n fjs :gpwc/q ,made of 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 equ4fu/cs:,b( 9(n mmqjw ng/bpfal 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 momentum of bf lqawk.4xk24,k,l) 9 lvaecc vlqk+--2yuc a system to be con92a2,l-lvv4xkyw .k a-cf qucb eckq,l 4l )+kstant?

  01.27: A spinning ice skat7*;uap gh8 wuber can increase his rate of rotation by bringing his arms an7 ghpbw*;auu8 d 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 ,qxw ::s/ i3olq 1xdgl36bpes 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 change in the skater's angular momentum as she brings her arms in tight to her body?

  0.33: A figure skater b1v u 6(gfz *q b6mim)nky+r*phas a 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, moves in a circx hyr92 y rw0tzqd2.69ju 4narxm*vz7le on a horizontal fricj4y97qry69xmzd a*rr .2z0h txvwn2 utionless 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 piv7gr-bw0+izc x 0da,z coted at one end. The rzc0ag,wz7d rx0 +bc-iod has mass M=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 disk with mass M and radius R is rotating on a s1 m 6lsmr)n rdgu7i28x;gajnsd( 6.gh nu; v)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 dir6 hgm ;8dun vgsinl7d. su1g; rxnasr))(m2j6ectly 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?