Powerful Pulleys and Mechanical Advantage

Vocabulary flashcards covering pulley types, historical context, CAD simulation tools, and mechanical advantage concepts.

Fixed Pulley

A pulley attached to a fixed point, where the rope is attached directly to the weight that needs to be lifted.

Fixed Pulley Mechanism

A single pulley configuration that changes the direction of the applied effort force to lift an attached load.

Fodder

A common source of animal food made of dried plants and grass, such as hay, used to feed livestock like cattle and horses.

Hay Bale Weight Range

The variable weight of harvested hay bales, which can range from as little as $40\,\text{lbs}$ to as much as $2000\,\text{lbs}$.

Hay Stacking Machine (1896)

A historical agricultural system used in the late 1800s that utilized a series of pulleys to transport and stack large amounts of hay into barn lofts or attics.

Inclined Conveyor Belt

A modern device commonly used on larger farms to move hay, requiring less time and effort than traditional pulley systems.

FeatureScript™

A programming language designed by Onshape® for building and working with 3D parametric models, allowing users to create custom features in CAD.

Pulley Physics FeatureScript

A custom feature in Onshape® that enables users to manipulate variables such as the number of pulleys, distance rope pulled in millimeters, and applied force in pounds.

Fran's Pulley Design Criteria

The system target of designing a pulley mechanism capable of lifting a hay bale of at least $600\,\text{lbs}$ using an applied force of less than $100\,\text{lbs}$.