Does an object at rest have inertia?

  • Thread starter Thread starter silviamar21
  • Start date Start date
  • Tags Tags
    Inertia Rest
Click For Summary
An object at rest does possess inertia, which is its resistance to changes in its state of motion. According to Newton's first law of motion, an object will remain at rest unless acted upon by an external force. This means that inertia is not dependent on the object's motion but rather its tendency to maintain its current state. Inertia applies to both stationary and moving objects, emphasizing the fundamental principle of motion in physics. Therefore, an object at rest indeed has inertia.
silviamar21
Messages
4
Reaction score
0

Homework Statement



Does an object at rest have inertia?

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org


Yes, a body will remain at rest until an outside force acts on it.
 
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
5
Views
940
Replies
14
Views
2K
  • · Replies 11 ·
Replies
11
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 40 ·
2
Replies
40
Views
6K
  • · Replies 11 ·
Replies
11
Views
2K
Replies
12
Views
1K
  • · Replies 13 ·
Replies
13
Views
3K
Replies
1
Views
1K
Replies
52
Views
4K