13.47: Which one of the following choices best represents the magnituded ttc ql2+(if2 wum:3d)rgxmeg/(:ev of the angular momentum of the Earth (expressed in base MKS unfdt+2mq 3c::mv)x( ( gwut/lg2 iedre its) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates agr 9 *n uy.p0tjp3 09z3ouopcthe magnitude of the Earth’s p* 9jp rp3uag3oy.un oc t09z0angular momentum (expressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed ofr d,id.g4 kztgv6k ,-5c)mysj5y 8g ca 5.0 m/s along the line shown in the fid5g5t), s vg ,8y arckmzjiyg- 6.d4ckgure. 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 due6;g,,fd ieifi 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 choicgfid,ie ; fi,6es 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 Mp: +p(mjl-zw7/ihy in 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 thw/7m+ :phj-yzpii( nl e 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 ofx;py ooqxm)an-fw o8f+3 v*,h 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 mowqpxv*ofmo o8f-h;)x,3a y+ n mentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What conditionzzxgnp n ov7;)3d:6hi must be met for the angular momentum of a system to be constant?d ;z:73vg h6zpixon) n

  01.27: A spinning ice skater can increase d c*sky aj09e5his rate of rotation by bringing his arms and free leg cld 0a*j5y9ske coser to his body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a momenj6ds6wn/qn /tt 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 momentx,;knii1unq -u b7py; 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 circle on a horizontal g0m1r1r jn9vu b/hjq5frictionless 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 mej9bng5r /hqj 10m1 rvuasuring from the hole in the table?

  08.40: A point particle of mass m collides with a thin rod pivoted :khnk d 8i8+afat one end. The rod has mass M=2m, length L , and momn+:kh i88adfkent 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 dis)mj;mcngx om bv o(,-+k 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 mass 2M and radius R/2 is placed from rest directn mo)g-cvom ;,+(jxmb ly 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?