13.47: Which one of the following choices best represehae px(.d v:0hnts the magnitude of the angular momentum of the Earth (expressed in base MKS units) assx:p.ah( 0devhociated with its rotation about its axis?

  17.37: Which one of the following choices best approximat, (/lt 1b kp8f*wo4oqegtzxk3es the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated with/x,4pq 1l*ezgf o (8ktkwtbo3 its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s along the line sza5tuko0o: i((y 5zxxhown in the figure. Whakax0u(o 5(zixt5 z:yot is the magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle direcg8z0i 3 ck6fhluipa 1+ted 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 angular acceleration of the bicycle’s front wheel while it is slowing to rest from Mary’s point oi 0z63 l +uic8hgp1akff view?

  03.41: Two uniform spheres of mas dg z7evt;t7(*u6k xfcnpzw-: *rv2dq s M 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.t p:gw fk *xn- v;u(drt27qcvzz6e 7*d 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 arephk2z-i11tfem3b rh ; 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 equal kinetic energy, w3tzkembh- 1i21 r ;hfphat 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 momen1g6yb w1dbe7g29xdx q tum of a system to be consty 7d 1x2 xg1wbe6qgd9bant?

  01.27: A spinning ice skate e lyawwn8.f (0a9 uc3c2ay,z a0jkwc;r can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure af0w8ya c3awz0ac;l(un2a9k .,yc f w ejfect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inertiu-*r y b8nky6ja 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 hahe-0,gwqm z8 cs 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 osy/hjlmz9) jl(f. k;nf a string, 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 for a)jsymj9n h/zf.( ll;kn observer measuring from the hole in the table?

  08.40: A point particle of mass m collides with a thin rod pivoted at one ebl 3+ 20bvqqsxnd. The rod has mass M=2m, length L , and moment of inertixsq3 b0blq+ v2a $I=\frac{1}{3}ML^{2}$ . 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.a9tp dui1.3p 9ffbhpvz:* ,;ae ysgb 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 directly on top of the first disk so that the centers of the disks line up. When equilibrium is established, the disks are sua :f bt. pzvh3y91;.fppbs*,g 9ed aipinning at the same rate. What is the angular speed of the disks at equilibrium?