Simple Query about Forces

  • Thread starter jimmy42
  • Start date
  • #1
jimmy42
51
0
If an object is only half in the water, so floating. Will its horizontal force be half of that if it was fully underwater?

Thanks.
 

Answers and Replies

  • #2
Doc Al
Mentor
45,424
1,871
What do you mean by "its horizontal force"?
 
  • #3
jimmy42
51
0
So, the water will be pushing on it in the positive and negative X ( left and right ) direction. If there is a box floating then only the bottom part will feel this force, as they are both equal they will cancel out. That means the box will not move.

I know that the force acting in the Y direction, so up down will be different and can work that out. I just wanted to know if half the box is in the water does it follow that because half as much water is exposed to the box then the force is half as much as when it's fully in the water.

Thanks.
 
  • #4
Doc Al
Mentor
45,424
1,871
So, the water will be pushing on it in the positive and negative X ( left and right ) direction. If there is a box floating then only the bottom part will feel this force, as they are both equal they will cancel out. That means the box will not move.
The net horizontal force exerted by the water on the object will be zero. However the water does exert an upward buoyant force on the object.

I know that the force acting in the Y direction, so up down will be different and can work that out. I just wanted to know if half the box is in the water does it follow that because half as much water is exposed to the box then the force is half as much as when it's fully in the water.
The buoyant force equals the weight of the displaced liquid (this is Archimedes' principle). So the buoyant force when half-submerged is half as much as when fully submerged.
 

Suggested for: Simple Query about Forces

Replies
2
Views
444
  • Last Post
Replies
1
Views
472
Replies
9
Views
247
Replies
15
Views
363
Replies
2
Views
282
Replies
14
Views
2K
Replies
6
Views
396
  • Last Post
Replies
2
Views
350
Replies
12
Views
516
Top