13.47: Which one of the following choic(wirb;sp4u4fn2 9m ma, ktqw0es best represents the magnitude of the angular momentum of the Earth (expressed in nqm9 (40,ka 2i4spw;urw tf mbbase MKS units) associated with its rotation about its axis?

  17.37: Which one of the fol8l4srht+ +nw0fz/p cclowing choices best approximates the magnitude of the Earth’s angular lc+zc 4nhfstw/p0 8r+ 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 of 5.0 m/s along the lin 8,rp3;g1mkimobf7qz e shown in the figure. What is the magnitude of the particlegko3qbzm, 7mp;i18fr ’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle direcnd +g du.fw+q6ted 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 .6dqn u gw+fd+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. Eax1o lec(0 )gm5ngjpjo rd u651ch sphere is rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identiogg1u ol55per( j1)6 jdx ncm0cal. 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 hz3j d1,g apr0jas 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 a jzg3,rj1pd0of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for megirck-a2 h vah7 5.9the angular momentum of a system to be cons2kr5m9h - cavh7gi.a etant?

  01.27: A spinning ice skater cd6*gqa5pr/ e4ovhf5q an increase his rate of rotation by bringing his arms and free leg closer to 56aq *r/og5qpd4vh fehis body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment of inerti4iqkawsle b622xg ww-iir44hu; te ):a 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 inertiaxl1y8mjrn:zd; nla ,jc-f8)g 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 cir/9 kx31tmx +-mkqimptcle on a horizontal frictionless table as shown. As the string is pulled very slowly through a small hole in the table, which of 3+mm- tkx t qi1/xp9kmthe 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 atl 8n shys6gq j y 2a;qwf7-f95osgt9e3 one end. Theeygaf-5s;2tsj9 lq 37w s qgho9n6y8f rod 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 rl3nk -xqfu o5, dwvcepv 2w12jgfk.7*adius 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 arefq 3- u gv.w1lonkpwk5cej v2 ,d*f7x2 spinning at the same rate. What is the angular speed of the disks at equilibrium?