The "Price is Right" spinning wheel is a solid vertical disk with a radius of 1.25m, and a mass of

200kg. A 78kg contestant grabs the handle on the outside edge of the wheel and applies half of

his body weight to pull straight down (perpendicular to the edge of the wheel). What is the

initial angular acceleration for start of this spin? (see table 10-1 for "I" of this disk)

TABLE 10-1 Moments of Inertia for Uniform, Rigid Objects of Various Shapes and Total Mass M Hoop or Disk or cylindrical shell solid cylinder Long thin rod Disk or I = MR2 Long thin rod 1 = MRZ (axis through midpoint) solid cylinder I = ML? (axis at one end) (axis at rim) I = =ML2 I = =MR2 R R R Hollow sphere Solid sphere I = =MR I = MR Solid plate Solid sphere (axis at rim) (axis through center, Solid plate in plane of plate) I = MR2 (axis perpendicular I = TMI? to plane of plate) I = M( LZ + W3)