13.47: Which one of the following choices best repp ky)g/:+3kgcc l5mze resents the magnitude of the angular momentum of the Eary5 :z /k e+3g)clkpcgmth (expressed in base MKS units) associated with its rotation about its axis?

  17.37: Which one of the f /qk.;uaq8/ wq ieg7rbtawe-;ollowing choices best approximates the magnitude of the Earth’s angular momeqa qaw; .8/rwteigq7keu;-/b ntum (expressed in base MKS units) associated with its orbit around the Sun?

  11.40: A 2.0 kg part868ge /(lfmf4y,jv v2uv ylj gicle travels at a constant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momentum 4feu( yll/2,g8 g6y mv fj8vvjcalculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle direc;3,) ut e j6qpl8vlilu,ab q5 a(:zairted due South. She applies the brakes quickly bringing the bicycle to rest with the wheeq ju:q863tal azi (i l,p)vu,5a;b rlels 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 and 2R. Each sphe /tpm3qf +ktyl6cf/ q1re is rotating about a fixed axis through a diameter. The rotational kinetic energies of the /k+/tm3 tql cpy1f6qf 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 th2-5d5/ hsxbp n*khlce e same material. One disk has radius R while the other disk has radius 2R. Both disks are rotating about a fixed axis perpendicula 52dh * khpb5/secxln-r 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 toiq08,1i4el 9xbqtr rhe angular momentum of a system to be constant? it4ql io r901eq,x8br

  01.27: A spinning ice skate7o/f2+fuhe fjve c-d7r can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's rotational momentum and k-/hj27cdfeuf e+o7 vfinetic energy?

  03.32: A figure skater has a moment rtq,9vjyg 43 0+igfnmof 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 h :c*- czpk t472kmvkfyas 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 string, moves in a circle on ps spl14es,40z1lfpbtd9ph 4a horizontal frictionless table as shown. As thflsblsh,940p41 p4esz1d ppte 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 rod pivoted at or4* 7je*o: 7.ca5yknf kb 3t tzwhd8zqne end. The ro.7o5zkn8 *7: kwzr eydat3qc bh4t fj*d has mass 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 and radius R is rotating on a fixed,x c5)p7 pkuv4wc2s *rb 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 tk4*pr)cc p7ux wbs5 2vhat 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?