Moment of inertia and angular acceleration with Cobra SMARTsense and a precision pivot bearing

Principle

If a constant torque is applied to a body that rotates without friction around a fixed axis, the changing angle of rotation increases proportionally to the square of the time and the angular velocity proportional to the time.

Benefits

• Long runtime
• Nearly friction-less movement due to precision bearing
• Steady set-up prevents interferences
• Data logging reveals instantaneous results during measurement

Tasks

1. Measurement of the laws of angle and angular velocity according to time for a uniform rotation movement.
2. Measurement of the laws of angle and angular velocity according to time for a uniformly accelerated rotational movement.
3. Rotation angle; is proportional to the time t required for the rotation.

Learning objectives

• Angular velocity
• Rotation
• Moment
• Torque
• Moment of inertia
• Rotational energy