13.47: Which one of the followf 4f h1pk q8kwgdvd9 e32ac/;ir1wd a(ing choices best represents the magnitude of the angular momentum o wr/f1 kv(a dkc12;dwe 98dq 4gpahi3ff the Earth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the following choices best approximates the magnitm mj wcahm2;qv(f4 :)jude of the Earth’s angular momentum (expressed in base MKS units) associated with its orbit around themcah;m (jvqwm: j)2f4 Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s along the lineqfo8tn4 u9b/yc68zeq shown in the figure. What is the magnitut 9qf48/u yqne bzc6o8de 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 the brakes qu cz4em-63edteickly bringing the bicycle to rest with the whetemz36 e-dce 4els 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 of view?

  03.41: Two uniform spheres of mass M have radii R andn7f,w fve hj57 2R. Each sphere is rotating about a fixed axis through jf7en,hv7f5w 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 material. One disk has radius R whilo fgiw//4h4n he the other disk has radius 2R. Both disks are rotating about a fixed axis perpendicular to the disk,g4wfhnh4 o //i 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 momentum2oo/njj3z6 jd2w ;se* d3 vntc of a system to be constanto jvonj22 c;e3/z s6dd *wj3nt?

  01.27: A spinning ice skater can inn+c8r1v i9 im,0i phxocrease his rate of rotation by bringing his arms and free leg closer to his body. How 8mo1x+nv0 9c,hirp iidoes this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a mome,bu do- 9 th2b )5l5j8w ovf8pu7wrsbent 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 .9 2my-oaapz3snx3ck has 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 thwl) 6b1wi7fi ls 7d6ure end of a string, moves in a circle on a horizontal frictionless table assrl6d w i7lb7)1wu if6 shown. As the string is pulled very slowly through 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-w3+2fxbe 8p2vhej k3 5a+nkijmd ai. rod pivoted at one end. The rod has ma2fb.j+-japnm+ie8a hvki d2xe53 w3kss M=2m, length 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 with mass M a9sk- fq- gu8zq ;zf3emnd radius R is rotating on a fixed, frictionless platform with constant angular speed ω0 about a fixed axis-qezuk-sfm f39 gq 8;z 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?