Moment of Inertia of Flywheel
- The length of the cord is carefully adjusted, so that when the weight-hanger just touches the ground, the loop slips off the peg.
- A suitable weight is placed in the weight hanger
- A chalk mark is made on the rim so that it is against the pointer when the weight hanger just touches the ground.
- The other end of the cord is loosely looped around the peg keeping the weight hanger just touching the ground.
- The flywheel is given a suitable number (n) of rotation so that the cord is wound round the axle without overlapping.
- The height (h) of the weight hanger from the ground is measured.
- The flywheel is released.
- The weight hanger descends and the flywheel rotates.
- The cord slips off from the peg when the weight hanger just touches the ground. By this time the flywheel would have made n rotations.
- A stop clock is started just when the weight hanger touches the ground.
- The time taken by the flywheel to come to a stop is determined as t seconds.
- The number of rotations (N) made by the flywheel during this interval is counted.
- The experiment is repeated by changing the value of n and m.