13.47: Which one of t6mddy*vs :wj s5r2s q::n:bawhe following choices best represents the magnitude b:s ::26wr5q dnva:jw ssyd*mof the angular momentum of 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 magnit +:ygdh2o22ly c, d7r ckc,rsrude of the Earth’s angular momentum (expressed in base MKS unic2ohy rcl, s 2+ryddrk7g c,:2ts) associated with its orbit around the Sun?

  11.40: A 2.0 kg particle trav1sg9x0o7tkh u els at a constant speed of 5.0 m/s along the line shown in the figure. What is theh k19 ut0x7sog magnitude 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 brar(ge4peh(78xa w1a qi jlnq3- kes quickly bringing the bicycle to rest with the wheels rolling without slipping on the ground. Which oneieqj (37x w8ghqpr14l (neaa- 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 and 2R. Each sphere is rt2zao g t8w)l:n:v wl3otating about a fixed axis through a diameter. The rotational kinwt3:2:wavo tlzl g)n 8etic 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 mex dvosw1 h:+bq28zo0 ade of the same material. One disk has radius R while the other disk d8+zos exv:ohb0q12 w 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 disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the angular mom+o1;zo an3gpw entum of a system to be constp1+3ogo zaw;nant?

  01.27: A spinning ice skater can increase his rate of rotation by bringing his 2 s0grzq7x/72l( *vydeoq0x4 e rofs harms and free leg closer to his body. How does this procedure affect the skater's rotational momentum and kig rx 72ss7(yv*qh0dexo l02/f4ze roqnetic energy?

  03.32: A figure skaterc1ug.)3 p9ij2evp c d32db tn4ydia(x 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 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 in/-rj:j:rdurob15myxrb- c o 4ertia 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, moved m9*zrl /n7aes 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 an observenr m*9a7/z ledr measuring from the hole in the table?

  08.40: A point particle of mass m collidw x9jw)nebn),es with a thin rod pivoted at one end. The rod has mass M=2m, length L , and moment oenb),w j9 x)nwf 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 and radius R is rotating on a fmxrzg2ou*uhhu6 7( ;qixed, frictionless platform with constant angular speed ω0 about a fixed axis through its center. A second uniform solid disk of mass 6 u(g;xo2u*hzq hr u7m2M 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?