13.47: Which one of the following choices best repreomg j 5l(3/emysents the magnitude of the angularlo3m (eym5j g/ 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 gcy*) 7nt+eltapproximates the magnitude of the Earth’s angular momentum (expressed in base MKS units) associated witl)7g*ye n +ttch its orbit around the Sun?

  11.40: A 2.0 kg particle travels a())7n8omi : nn jqwbwdt a constant speed of 5.0 m/s along the line shown in the figure. What is the magnitude of the particle’s angular momin ( od8)mbqj)7wn :wnentum calculated from the origin( unit: $kg.m^{2}/s$)?

  11.35: Mary rides her bicycle directed due South. , jg/pirxf8 rr*cm-w-jup1 4y1xpxn6She applies the brakes quickly bringing the bicycle to rest with the wheels rolling without slipping on the ground. Which one of the following choices besx ,r u6-p*ri n/wy81gxc pp frj41mjx-t 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 :zk hwheih m6v2;t.- v wj1i( c1hxoi0rotating about a fixed axis through a diameter. The rotational kinetic energies of the spheres are identicalihhe w0:.vhxt6-kc;oim v1w( i2hj z1 . 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 sd m1p-s;0fvsu/v(l2a (i b nsbame material. One disk has 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, wpudv;iam/sv(bs(10f 2nl- bshat is the ratio of the angular momentum of the disks $\frac{L_{2R}}{L_R}$

  17.24: What condition must be met for the a.+2*ncr0lfmf/028bra qy z:jfoi kzvok 5yg ;ngular momentum of a system to be const 2km2 /jq.of0iyof ra lnvckg: y8z;+0 5frzb*ant?

  01.27: A spinning ice skater can increase his rate of roy us 5zk8*6kr9nr 7fhltation by bringing his arms and free leg closer to hifk9k l6 5ry* nrs78zhus body. How does this procedure affect the skater's rotational momentum and kinetic energy?

  03.32: A figure skateq +uuw56uh0dinrv 6z+r 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 mqr :1v*b:8y3 bpesyqmoment 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, motacerh;d(- idj0 wp *)ves in a circle on a horizontal frictionless ta ahr*d)(c j0-etiw pd;ble as 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 rod pivoted at one7s;s +b+qf meswo /-l8cdp1lx end. The rod has mass M=-dl+w8o7smq x b1lp;ec/ f+s s2m, 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 8 -iyd3cl4. t9k4yvbsyvsz6 o M and 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 disks are spinning at the same rate. What b43ds-4o lytc6z.syyikv 8 v9is the angular speed of the disks at equilibrium?