13.47: Which one of the following choices km x1c4-jjjc/ best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) j / xc-jmk1jc4associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the ww8 hx0uh/xi0 magnitude of the Earth’s angular momentum (expressed in base MKS u8 h00wxhx/wiunits) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s q2et.mc pn7,salong the line shown in the figure. What is th. necm27,qt pse magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bi1 ncd7sx52ww ycycle directed due South. She applies the brakes quickly bringing the bicycle to rest with the wheels rolling without slipping on the ground. Which wsx n57w1dy2 cone 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 sphnhsv66g74gzfd8; c2nzwkgb2zc2l+j eres of mass M have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational+gvbc8 hclzzgg ;2k 2 d42wnz6fnsj76 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 material. One disk has radr1xj(f2x5s wux6ewv ( ius R while the2 6x5jxxrfeuv(w ws(1 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 the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular jr e7dbg6gr4dd,a + v ;pg0w8umomentum of a system to be constant7epdv+6g80; jg,rrd d wua bg4?

  01.27: A spinning ice skater can increase his rate of rotatsop,s k,k.an3 w6c8m tion by bringing his arms and free leg closer to his body. How does this pr3n,8swa .cmk 6 pko,tsocedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moeq8yri wiv5 42ment 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 a moment of ine7o u 7f7fjr;fdrtia 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 circle on :is.u j5ntds(a horizontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which of the followiinj.d(:t s 5sung 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 gy*.hl4al5d +a :qhngpivoted at one end. The rod has mass M=2m, length L.h5gl+l*gan: 4 qahdy , 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 kgz5*ak 4ll6 ,xspm8o 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 x 8zm6kl,p5*la4 sgko 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?