Lab 120

# Lab 120 - LAB 120 Mehar Ghei LABORATORY EXPERIMENT REPORT...

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LAB 120 Mehar Ghei LABORATORY EXPERIMENT REPORT Name: Mehar Ghei Group Members: Nicole Tran, Yvonne Chen, Nakib Junayed Experiment Date: Tuesday, November 16 th , 2010 Course Name: PHYS 111A Section: H01 Instructor: Beidi He LABORATORY #120 Conservation of Angular Momentum 1. OBJECTIVE Verify that angular momentum is conserved in an inelastic collision. 2. THEORETICAL BACKGROUND Angular momentum, with mass and velocity about an axis: = = Lm pd mvd Angular momentum, with perpendicular distance from axis to line of action: - = LA A' Moment of Inertia: = Idisk 12MdiskR2 = + Iball catch 112Mball catchL2 Mball catchb2 = Iball Mballd2 = Ismall pulley 12Msmall pulleyr2 3. EQUIPMENT The equipment used for both parts of this lab: Steel disks Air compressor Rotational dynamics apparatus Pulley String Washer Mass Page 1 of 3

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LAB 120 Mehar Ghei Ball with ball catch Ramp for ball 4. COLLECTED DATA Object Mass (g) Radius (cm) Ball 28.2 0.9 Ball Catch 43.3 - Top Disk 466.5 6.3 Small Pulley 10.9 1.3 Dimensions of Ball Catch: d = 8.4cm = . ω 2 0 1rads
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