The sky is the limit: human powered cranes and lifting devices
From the earliest civilisations right up to the start of the Industrial Revolution, humans used sheer muscle power, organisation skills and ingenious mechanics to lift weights that would be impossible to handle by most power cranes in operation today. The most common tower crane used in construction today has a lifting capacity of some 12 to 20 tonnes. For quite a few construction projects in ancient history, this type of crane would be completely inadequate. The majority of stones that make…
Physics Formulas on Grey
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Pulley Systems - Flaschenzug
This document shows you how to make an effective and useful pulley system. If you study the pictures, you will be able to understand how the ratio of a pulley system is calculated. Understand that the maximum load to the break in a pulley system should not be underestimated. And last but not least I visualized you some systems with different ratios. This is for example useful if you plan to setup longer slacklines.
15.2 The First Law of Thermodynamics and Some Simple Processes - College Physics | OpenStax
Describe the processes of a simple heat engine. Explain the differences among the simple thermodynamic processes—isobaric, isochoric, isothermal, a