How Horsepower is equal to 550 ft lb/s ?

  • Context: High School 
  • Thread starter Thread starter PHYSICS5502
  • Start date Start date
  • Tags Tags
    Horsepower
Click For Summary
SUMMARY

James Watt established that one horsepower is equivalent to 550 foot-pounds per second based on empirical observations of a horse's hauling capabilities. This derivation was influenced by commercial interests, leading to some exaggeration in the power claims of steam engines manufactured by Boulton and Watt. The historical context highlights the competitive nature of early industrial machinery and the marketing strategies employed to promote steam power over traditional horse power.

PREREQUISITES
  • Understanding of basic physics concepts, particularly work and power.
  • Familiarity with historical context of industrial revolution and steam engines.
  • Knowledge of measurement units, specifically foot-pounds and horsepower.
  • Awareness of the role of Boulton and Watt in the development of steam technology.
NEXT STEPS
  • Research the historical development of horsepower as a unit of measurement.
  • Explore the engineering principles behind steam engines and their efficiency.
  • Investigate the marketing strategies used by Boulton and Watt in promoting their engines.
  • Learn about the evolution of power measurement units in engineering.
USEFUL FOR

Historians, engineers, students of physics, and anyone interested in the development of industrial technology and measurement standards.

PHYSICS5502
Messages
7
Reaction score
0
How did James Watt found out that one horsepower is equal to 550 ft lb/s ? There must be some sort of derivation or something that he did.Can anyone show me that derivation.
 
Last edited:
Physics news on Phys.org
From observation of the haulage power of a horse . He fiddled the answer a lot though for commercial purposes .

Boulton and Watt manufactured steam engines .They were a bit notorious for making exaggerated claims about the power and economy of their engines compared to horses .

https://en.wikipedia.org/wiki/Horsepower#History_of_the_unit
 
Last edited:
  • Like
Likes   Reactions: PHYSICS5502

Similar threads

  • · Replies 10 ·
Replies
10
Views
5K
Replies
1
Views
6K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
Replies
14
Views
4K
  • · Replies 23 ·
Replies
23
Views
3K
  • · Replies 69 ·
3
Replies
69
Views
17K
  • · Replies 131 ·
5
Replies
131
Views
8K