Moment of Inertia of a Flywheel
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MOMENT OF INERTIA OF A FLYWHEEL AIM The aim of this experiment is to measure the moment of inertia of a flywheel. YOU WILL NEED A heavy flywheel mounted on an axle on suitable bearings A ruler Vernier calipers Access to a balance Set of slotted masses Thin cord Stopwatch WHAT TO DO Set up the apparatus as shown in the diagram and allow the weight to fall a height h onto the floor. The length of twine fixed to the small mass should be equal to h, the original height of the small mass above the ground. Let the small mass fall and measure the time (t) it takes to hit the ground. Count the number of revolutions (n) before the weight hits the ground and the further number of revolutions (N) before the flywheel comes to rest. Repeat the procedure several times and obtain mean values for all quantities. Measure the diameter of the axle (d) and record the mass of the falling weight (m) ANALYSIS AND CONCLUSIONS Calculate the moment of inertia (I) of the flywheel from the formula: I = md 2 /4 x N/[N+n] x ([gt 2 /2h] – 1) h d
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Moment of Inertia of a Flywheel
Transcript of Moment of Inertia of a Flywheel
MOMENT OF INERTIA OF A FLYWHEEL
AIMThe aim of this experiment is to measure the moment of inertia of a flywheel.
YOU WILL NEEDA heavy flywheel mounted on an axle on suitable bearings A ruler Vernier calipers Access to a balance Set of slotted masses Thin cord Stopwatch
WHAT TO DOSet up the apparatus as shown in the diagram and allow the weight to fall a height h onto the floor.
The length of twine fixed to the small mass should be equal to h, the original height of the small mass above the ground.
Let the small mass fall and measure the time (t) it takes to hit the ground. Count the number of revolutions (n) before the weight hits the ground and the further number of revolutions (N) before the flywheel comes to rest.
Repeat the procedure several times and obtain mean values for all quantities. Measure the diameter of the axle (d) and record the mass of the falling weight (m)
ANALYSIS AND CONCLUSIONSCalculate the moment of inertia (I) of the flywheel from the formula:
I = md2/4 x N/[N+n] x ([gt2/2h] – 1)
h
d
