For more info: 021 55734344

Home / Products

TM 122 Equilibrium of moments on a differential pulley block

- Equilibrium of forces and moment1
- Demonstration of the force reduction on a differential pulley block


Technical Description

The model demonstrates the conditions of equilibrium on a differential pulley block. Three anodised aluminium pulleys of different diameter are fitted to a shaft mounted on ball bearings. The forces act, on the one hand, directly on the peripheral of the largest pulley, on the other hand, via a loose pulley on two smaller pulleys. Easy to interchange weights permit the load to be varied such that equilibrium is obtained. The model is intended for wall mounting.

Learning Objectives / Experiments
- Equilibrium of forces
- Equilibrium of moments
- Relationship between force reduction and cord travel


[1] Experiment on the equilibrium of forces and moments on a differential pulley block
[2] 3 pulleys made of anodised aluminium
[3] 2 sets of weights
[4] Ball bearing mounted steel shaft
[5] Anodised aluminium base plate

Technical Data

Pulley diameter
- D=250mm
- D=100mm
- D=50mm

Loose pulley
- D=75mm

Set of weights
- 2x 1N (hanger)
- 4x 0.5N
- 4x 1N
- 4x 2N
- 4x 5N

Base plate
- wxh: 300x250mm
- hole spacing: 280x230mm, D=10mm

Dimensions and Weight
l x w x h: 300 x 280 x 250 mm
Weight: approx. 15 kg

Scope of Delivery
1 support with pulleys
 set of weights
1 loose pulley
2 cords
1 instruction manual

Subscribe now