13.47: Which one of the following choicqqgmt9o5,wj,;d 4 *q ucdc:ww es best represents the magnitude of the angular momentum of the Earth (expressed in base MKS units) associated with qm9tcwo*dw u,:d q,g4c 5j qw;its rotation about its axis?

  17.37: Which one of the following choices best approximates thetx.j3gfim 3d, magnitude of the Earth’s angular momentum (expressed in base MKS units) asx3t mjf3ig.d, sociated with its orbit around the Sun?

  11.40: A 2.0 kg particle travels at a constant speed of 5.0 m/s alonti)8dvt k5b2f g the line shf)t d v85tbik2own in the figure. What is the magnitude of the particle’s angular momentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle di ce1knr.xiw i65(yo yw t77if;rected 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 be y 57(oi fi1xrtky;w.cei6w7nst 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 iss fyt l*s33qk dys4f(4+uefe yh,xv(- rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identical. What is tfy*3-+ (e4ydy 3 (,qxfs 4fukhsvelsthe 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 ml3tf1k (d ,rcnaterial. One disk has radius R while the other disk has radius 2R. Both didn tlr1kc3 f,(sks 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 conditionzs5,4ex8m -xkr*ww fw must be met for the angular momentum of a system to be constanxsr 8fk5 w4*w-xze m,wt?

  01.27: A spinning ice skat,qo cag8w2 / ye8c7zxhna4lc5er can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect4n,glcxq5 ch8az wca7o82 y/e the skater's rotational momentum and kinetic energy?

  03.32: A figure skater has a moment offvykt:xk5 g7d f v mv-1rubys .45v(b) 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 mom o2aakhq( e:rgz68+bzent 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 esnb0v7v3tgvc (px6)8s: fopqc3c1 o in a circle on a horizontal frictionless table as sho v cv61o escocn7v)pg33pt0(q8:bsfxwn. 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 f ckv clz7o+;r,vump-63 yp*pm collides with a thin rod pivoted at one end. The rod has mass M=2m, length L , andv3yp; -*u6 zcpm kpoc7,+vlrf 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 andxwrtg+5u /(7oy/bu d i 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 disksw dbtx rgu5o7u(y+ i// are spinning at the same rate. What is the angular speed of the disks at equilibrium?