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Moment of Inertia & Rotational Motion

PHY 200 & 230

Lab PDF 1
Lab PDF 2

Energy conservation principles are used to calculate rotational moments of inertia. For this apparatus, the linear relationship between inertia and the square of the distance to the axis allows a least squares fit to determine the mass used as well as the inertia of the empty apparatus. Graphs may be hand drawn or produced on computers.


Name Location Quantity
Centripetal Force Apparatus (CENCO) JE-105A-S11 1 per table
Meter Stick - 2.00m JE-105A-(105 Door-L) 1 per table
Timer, - MyChron, Battery JE-105A-D62 1 per table
Weight Hangers, 50g JE-105A-D44 1 per table
Meter Stick - 1.00m JE-105A-(105 Door), D98 1 per table
Masses, Slotted 100g In Back of JE-105, 107 & 109 2 per table
Laptops JE-107-109 wallsafe 1 per table
Calipers, Dial JE-105A-D88 1 per table


Put out the CENCO Centripetal Force Apparatus found on S11,17,23. Make sure that each string is roughly 1.5 meters or long enough so that the weight hanger hits the ground. There is a cup labeled "strings for moment of inertia." Use the threaded rods and screw on 4 wing nuts, 2 on each end of the rod. They should be screwed in pairs on such that the flat surfaces of the nuts mate and the wings face outward.

Make sure that the room has plenty of graph and regular paper.

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Item modified on 2013-11-07 12:18:31 by sabbaghj2.