25-08-2017, 09:32 PM
MOTOR GYROSCOPE WITH DIGITAL TACHOMETER
Aim:
To determine the active and reactive gyroscopic couples and compare them.
Apparatus required:
Gyroscope, tachometer, or stroboscope, variable voltage transformer, rotating disc with a light
reflecting sticker for stroboscope speed measurement
Procedure:
1. The disc as made to rotate at a constant speed at a specific time using variable voltage
transformer.
2. The speed of the (N) disc is measured using a tachometer or a stroboscope.
3. A weight /mass is added on the extending platform attached to the disc.
4. This causes an active gyroscopic couple and the whole assembly (rotating disc, rotor and
weight platform with weight) is standing to move in a perpendicular plane to that of plane of
rotating of disc. This is called gyroscopic motion.
5. The time taken (t) to traverse a specific angular displacement (φ =60°) is noted.