 # Bifilar/trifilar suspension of pendulums (TM 162)

SKU TM162

ideal mathematical pendulum can be demonstrated

 Code TM162

Description:

• In a bifilar suspension, the pendulum body is suspended over two threads.
• The pendulum body oscillates in a plane purely translationally without rotation.
• This kind of pendulum can be considered as a mathematical pendulum.
• In a trifilar suspension with three threads, the pendulum body is set in a torsional vibration.
• The torsional vibration can be used to determine the moment of inertia by experiment.
• The TM 162unit can be used to study pendulum swings with bifilar or trifilar suspension.
• A beam, a cylinder or a circular ring are used as pendulum bodies.
• The length of the threads can be adjusted using clamping devices.
• The moments of inertia of the pendulum body can be calculated from the measured oscillation period.
• The oscillation period can be varied by changing the thread length.
• The experimental unit is designed to be fixed to a wall.

Technical Details:

Specification:

• investigation of the vibration behaviour of various pendulum bodies in bifilar and trifilar suspension
• investigation of a mathematical pendulum (bifilar) and a physical pendulum (trifilar)
• choice of three pendulum bodies: beam, cylinder, circular ring
• change the thread length with a clamping device
• stopwatch to measure the oscillation period
• determine the mass moment of inertia
• bracket for wall mounting

Technical Data:

• Pendulum bodies
• Beam:
• L x W x H: 40x40x160mm
• mass: 2kg
• cylinder:
• diameter: 160mm
• height: 19mm
• mass: 3kg
• circular ring
• outer diameter: 160mm
• inner diameter: 100mm
• height: 41mm
• mass: 4kg
• Thread length: up to 2000mm
• Stopwatch: 1/100s

Dimensions & Weight:

• L x W x H: 205x200x2000mm
• Weight: approx. 12kg

Learning Objections/Experiments:

• influence of thread length on the oscillation period
• determine the mass moment of inertia

Scope of Delivery:

• 1 experimental unit
• 1 set of instructional material

Features:

• ideal mathematical pendulum can be demonstrated
• moment of inertia in an experiment on a rotary pendulum

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.