What would affect horsepower more: speed or mass?

Click For Summary
Horsepower is fundamentally a measure of power, with 1 horsepower equating to 746 watts. The discussion clarifies that speed is a result of horsepower, while mass is a factor that horsepower must overcome to achieve speed. The equation P = F.v illustrates that power is dependent on force and velocity, regardless of mass. However, in specific scenarios like fluid drag, force can be influenced by velocity squared, complicating the relationship. Ultimately, understanding how horsepower interacts with speed and mass is crucial for evaluating performance.
Min
Messages
1
Reaction score
0
I was wondering which would cause the horsepower to increase and why would it be that one.
 
Physics news on Phys.org
Min said:
I was wondering which would cause the horsepower to increase and why would it be that one.
Huh? Speed is something you GET from horsepower. Mass is something that horsepower has to overcome to get speed.

What are you asking?
 
Hello min,
Horsepower is just another way of saying much power
1 Horsepower = 756 Watt
And in mechanics P = F.v so independant from mass
 
Noctisdark said:
Hello min,
Horsepower is just another way of saying much power
1 Horsepower = 756 Watt
And in mechanics P = F.v so independant from mass

Actually, 1 HP = 746 watts

And there are several different ways to calculate horsepower requirements. P = F × v is one of those ways, but what if F is itself a function of v ?

For example, in fluid drag, F is proportional to v2.
 
Oops sorry ididn't notice that careless mistake,
@SteamKing, P = F.v regarless of whatever F is, (ie function of anything) but that a great thing to point at
Is meant to write it that way to show that it is prop to the velocity, however in cases of gravity F depends on mass and in most other cases don't but it will always depends on the velocity.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

Similar threads

Replies
23
Views
3K
Replies
2
Views
1K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
2
Views
1K
  • · Replies 29 ·
Replies
29
Views
4K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
7
Views
10K
  • · Replies 3 ·
Replies
3
Views
3K