13.47: Which one of the following chhszh6 bkl2gjywk-5x7q( g:) xoices best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with its rotatiy 7 q6(jx:z 5lwhsx-2khg gkb)on about its axis?

  17.37: Which one of the following choices uts c/02m8(t c gqbp2obest approximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit around /cp28ms2(o 0utbqgtc the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m5gqiu*2 n,zll k x (nf)yb99ob/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum calculated fi*,b9uzn nl(o5y 29l xf k)gbqrom the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle direcmzl: umvdqto);l . 6*bted 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 direction of the angularvq*:lo.;6um ) tlz bmd 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 raarh*81j +5d; g3d)hanxoy .ev uhce1v dii R and 2R. Each sphere is rotating abou 1u;*h8+oehv .ca y5ed1gn rx3j) hadvt a fixed axis 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 mrqlw cux3*./o;i/6 s 0ej skpwaterial. One disk has radius R while the other disk has radius 2R. Both disks are rotating about a fix6;xor/ i swl *qju/k0.cw p3seed 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 conditiob(eyrn r xhw2ob g3p2, *de.t+n must be met for the angular momentum of a system to be constan htxywdb+,prbgn (e2o.e2 3 r*t?

  01.27: A spinning ice skat x ,c:8xjsw8bx1(6tadszirnjp7.g9 w er can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's z bw: 8jt x.pg(,na7jsiwxx1c6 98sdrrotational momentum and kinetic energy?

  03.32: A figure skater has,3egml9 .h hjj 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 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 f2 o yw2s/6vsfinertia 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 ,h h2m9+vjmpd string, moves in a circle on a horizontal frictionless table as shown. As the string is pulled very slowly throuhm92 jhmv pd,+gh 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 rz9mcc m2xmr 4q69 )gphod pivoted at one end. The rod has mass M=2m, xm6mphgq zr)4 9cm92clength 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 nb9fh *cc(q)u with mass 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 massh)u(fq9 cnc* b 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?