2 objects from the same altitude?

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In summary: No, they won't. Write the equation for forces acting and the resulting acceleration. Here's a hint: In the case where no air resistance is acting, the force due to gravity is F = m*g. The acceleration is then given by Newton's second law, so a = F/m, or a = m*g/m = g. All fine and dandy, and just what is expected: everything falls with acceleration g.
  • #1
egerol1
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Hello my question is this:

If we throw 2 objects which are same but their masses are different from the same altitude they drop to the land in the same time?

(We consider that the friction force is active it's not negligible
 
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  • #2
egerol1 said:
Hello my question is this:

If we throw 2 objects which are same but their masses are different from the same altitude they drop to the land in the same time?

(We consider that the friction force is active it's not negligible

Suppose that the drop altitude was high enough that both objects could each terminal velocity for a good portion of their falls. At terminal velocity a body is no longer accelerating. Draw the free body diagram for each. How do the forces add up? Is the terminal velocity the same for each?
 
  • #3
egerol1 said:
Hello my question is this:

If we throw 2 objects which are same but their masses are different from the same altitude they drop to the land in the same time?

(We consider that the friction force is active it's not negligible

You appear to be saying the two objects have the same shape, so the friction force is the same for both. In which case they do land at the same time.
 
  • #4
AC130Nav said:
You appear to be saying the two objects have the same shape, so the friction force is the same for both. In which case they do land at the same time.

No, they won't. Write the equation for forces acting and the resulting acceleration. Here's a hint: In the case where no air resistance is acting, the force due to gravity is F = m*g. The acceleration is then given by Newton's second law, so a = F/m, or a = m*g/m = g. All fine and dandy, and just what is expected: everything falls with acceleration g.

Now try the same thing only let air resistance play a part in determining the net force. Just assume that the air resistance is given by some arbitrary function, f(v). How does the result vary with mass?
 
  • #5
AC130Nav said:
You appear to be saying the two objects have the same shape, so the friction force is the same for both. In which case they do land at the same time.

But the gravitational force is different. :redface:
 

FAQ: 2 objects from the same altitude?

What does it mean for two objects to be at the same altitude?

Two objects are considered to be at the same altitude when they are located at the same height above sea level.

How do you determine if two objects are at the same altitude?

The altitude of an object can be determined by measuring its distance from sea level using tools such as altimeters or GPS devices. If two objects have the same altitude reading, they are considered to be at the same altitude.

3. Can two objects be at the same altitude even if they are at different points on Earth?

Yes, two objects can be at the same altitude even if they are located at different points on Earth. Altitude is measured relative to sea level, so two objects can have the same altitude reading even if they are located in different geographical locations.

4. Why is it important to know if two objects are at the same altitude?

Knowing if two objects are at the same altitude can be useful in navigation and aviation. It can also help in determining the distance between two objects and their relative positions.

5. Can two objects have the same altitude but different heights?

Yes, two objects can have the same altitude but different heights. Altitude is measured from sea level, while height refers to the distance between an object and the ground. Therefore, two objects can have the same altitude but different heights if they are located on different points on a mountain or hill.

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