13.47: Which one of the following choices m tgx.::bhwl-best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) a w.mbl ::gtx-hssociated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the )7wagm 5:,yz pgl9 rdvmagnitude of the Earth’s angular momentum (expressed in base MKS units) associat ayzmvrgw)7l 5g ,:pd9ed with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s along .4 kvjk* p7q; wdjda7uthe line shown in the figure. What is the magnitudvqk4d;7*. w7 aj dpkuje 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 theqe. :1xp8r srsa, 7ybm 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 angular acceleration of the bicycle’s front wheel while it is slowing to :aqymrs b87p,1 e rs.xrest from Mary’s point of view?

  03.41: Two uniform spheres of mass M 8 kvc(l,b2hry have radii R and 2R. Each sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identical. What is the ratrh2c,k vlyb8( io
of the magnitude of the angular momenta of these spheres? That is, $\frac{L_{2R}}{L_R}$=?

  05.49: Two solid disks are 3s1 (j x5r0g,xwjlhc ymade 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 equal kinetic energy, what is the ratio of the angular momentum of the ,sj5 xh(1w0cj xglr y3disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular 9p st/k,x8u+bply o*q momentum of a system to be con/s,tk+lpo9 pb q*u8xy stant?

  01.27: A spinning ice skater can increase his rate of rotation by bringing p,d85/,s6+ppc 7(l v wzpnbvq 5bxufphis arms and free leg closer to his body. How does this procedure affe pbqp,p,fb5pxwc5nzv7sp ud8 (+6l v/ ct the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment os;q* q / vhhqd8)qda5kdz*w2yed9jq4n4 ov2j f 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 h6pku c.*-3zu.ivscmem37v q1-a kaq sas 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 stringfjh5xqcwmnh) : *p ob -m*l:r;, moves in a circle on 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 hh*p nmc:wm: *xol qrbf-;5) jfor an observer measuring from the hole in the table?

  08.40: A point particle of mass m collides with a thinf83)2nizhrm) o19 sqmx 1yscu rod pivoted at one end. The rod has mass M=2m, length L , and moment of)2 89mfhyx31qzum rs incs )o1 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 mas z 8a3t( bcixa2g;rh) x 4qvqfoa,,.zys M and radius R is rotating on a fixed, frictf4zb .( aoaq; tar, v,2xi3zqxc gh)y8ionless 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 at the same rate. What is the angular speed of the disks at equilibrium?