How Horsepower is equal to 550 ft lb/s ?

  • #1
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:

Answers and Replies

  • #2
Nidum
Science Advisor
Gold Member
2,990
848
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 PHYSICS5502

Related Threads on How Horsepower is equal to 550 ft lb/s ?

  • Last Post
2
Replies
36
Views
3K
Replies
3
Views
1K
  • Last Post
Replies
2
Views
3K
Replies
22
Views
13K
  • Last Post
Replies
6
Views
10K
Replies
4
Views
9K
  • Last Post
Replies
15
Views
80K
Replies
15
Views
2K
  • Last Post
Replies
7
Views
2K
Replies
9
Views
910
Top