The radius of the pulley for the rotational lab is 20mm. The mass is 150g. The mass stays constant for the whole lab.FIND: Radius of medium pulley on rotational apparatus (r) kgMass of hanging mass (m) mTrial Hanging Mass Acceleration Rotational inertiaPulley platterPulley platter+solid diskPulley platter+thick ringPulley platter+rect barTable 2: Object dimensions and masses (use for theoretical Rotational Inertias)Item ValueSolid Disk: Mass(Mdisk) kg Radius(R) mThick Ring: Mass(Mring) kg Inner Radiu(a) mOuter Radius(b) mRectangular bar: Mass(Mbar) kg Length(l) m Width(w) mTable 3: Comparison -Experimental & TheoreticalDescription Experimental Rotation InertiaTheoretical Rotational Inertia % error

Disk m= 0.8764 keRing m= 0.7172 kgrod m= 0.699 kg diameter = 0.25 m a = 0.10699 m L = 0.225 m b = .12736 m w = 0.05 m Platter Platter Platter and DiPlatter and DiPlatter and RiPlatter and Ring platter and Rod Platter and Rod Time (s) Velocity (m/s Time (s) Velocity (m/s Time (s) Velocity (m/s) Time (s) 0.15 0.09 Velocity (m/s) 0.71 0.04 0.29 0.05 0.21 0.3 0.04 0.1 1.01 0.06 0.57 0.06 0.53 0.44 0.06 0.11 1.27 0.06 0.78 0.08 0.76 0.57 0.07 ).13 1.48 0.07 0.96 0.09 0.96 0.68 0.13 0.08 1.68 0.08 1.13 0.1 1.13 0.09 0.79 0.14 1.85 0.09 1.27 0.11 1.29 0.89 0.1 0.15 2.02 0.1 1.41 0.12 1.43 0.99 0.11 .16 2.17 0.1 1.53 0.12 1.56 1.08 0.12 0.16 2.31 0.11 1.65 0.13 1.69 1.17 ).17 ).12 2.45 0.11 1.77 0.14 1.8 0.14 1.26 0.18 2.58 0.12 1.88 0.14 1.91 1.34 0.14 0.19 2.7 0.12 1.98 0.15 2.02 1.42 0.14 0.2 2.82 0.13 2.08 0.16 2.13 1.49 0.15 0.2 2.94 0.13 2.17 0.16 2.23 1.57 0.15 0.2 3.05 0.14 2.26 0.17 2.33 1.64 0.21 0.16 3.15 0.14 2.35 0.17 2.42 1.71 0.22 0.16 3.26 0.14 2.43 0.18 2.51 1.78 0.17 .22 3.36 0.15 2.52 0.18 2.6 1.84 0.23 0.18 3.46 0.15 2.6 0.19 2.68 1.91 0.18 0.23 3.56 0.16 2.68 0.19 2.76 0.18 1.97 0.25 3.65 0.16 2.75 0.2 2.85 2.03 0.24 0.19 3.75 0.16 2.83 0.2 2.93 2.1 0.19 0.24 3.84 0.17 2.9 0.2 2.16 .25 0.2 3.93 0.17 2.98 0.21 2.22 3.08 0.26 0.2 4.01 0.18 3.05 0.21 3.15 2.27 .26 0.2 4.09 0.18 3.12 0.21 3.23 2.33 0.21 0.27 4.18 0.18 3.19 0.22 3.3 2.39 0.22 0.27 4.26 0.19 3.26 0.22 2.44 3.37 0.27 0.21 4.34 0.19 3.32 0.23 3.44 2.5 .28 0.22 4.42 0.19 3.39 0.23 3.5 2.55 .28 0.22 4.49 0.2 3.45 0.23 3.57 2.6 0.23 0.29 4.57 0.2 3.52 0.24 3.64 2.65 0.23 0.3 4.64 0.2 3.58 0.24 3.7 2.7 0.3 0.24 4.72 0.2 3.64 0.24 3.76 2.75 0.24 0.3 3.7 0.25 3.83 2.8 0.3 0.24 3.76 0.25 3.89 2.85 0.31 0.24 3.82 0.26 3.95 2.9 0.31 0.25 3.88 0.26 4.01 2.95 0.25 0.31 0.32 3.04 0.32be Careful about units! Radius of medium pulley on rotational apparatus (r) kg Mass of hanging mass (m) m Trial Hanging Mass Acceleration Rotational inertia Pulley platter Pulley platter+solid disk Pulley platter+thick ring Pulley platter+rect bar Table 2: Object dimensions and masses (use for theoretical Rotational Inertias) Item Value Solid Disk: Mass(Mdisk) kg Radius(R) m Thick Ring: Mass(Mring) kg Inner Radiu(a) m Outer Radius(b) m Rectangular bar: Mass(Mbar) kg Length(1) m Width(w) m Table 3: Comparison -Experimental & Theoretical Description Experimental Theoretical % error Rotation Inertia Rotational Inertia Disk alone Ring alone Bar alone