Gravity's Impact: Comparing Ball A and B

  • Thread starter Thread starter zizodev
  • Start date Start date
  • Tags Tags
    Ball Impact
AI Thread Summary
When comparing two balls of the same size and material, one filled with air (Ball A) and the other with water (Ball B), the discussion centers on which will hit the ground first when dropped from 100 feet. The initial suggestion is that Ball B will land first due to the higher density of water compared to air. However, the conversation highlights the need for a quantitative analysis, questioning the pressure of the air inside Ball A as a factor. The impact of air resistance and the density of the materials are critical to understanding the outcome. Ultimately, the discussion emphasizes the importance of considering both density and air pressure in determining the result.
zizodev
Messages
22
Reaction score
0

Homework Statement



consider two balls of exactly the same size and material.
Ball A is filled with air and ball B is filled with water.if dropped from a height of 100 feet,which will hit the ground first?

Homework Equations


U=mgh.

The Attempt at a Solution



i suggest the ball B will hit the ground first because the water is more denser than air.
:)
 
Physics news on Phys.org


zizodev said:

Homework Statement



consider two balls of exactly the same size and material.
Ball A is filled with air and ball B is filled with water.if dropped from a height of 100 feet,which will hit the ground first?

Homework Equations


U=mgh.

The Attempt at a Solution



i suggest the ball B will hit the ground first because the water is more denser than air.
:)

Nice hunch, but can you supply a quantitative reason?
 


yes PeterO we didn't know how that air in the ball is it in high pressor or not :)
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Find the Height of a Building by dropping a ball from the top
Replies
7
Views
3K
Two balls, dropped with a delay of ##\Delta t##, meet after rebound
Replies
34
Views
2K
Projectile motion: Two Balls and Building
Replies
9
Views
2K
Horizontal impulse on a ball at rest on a plane (with friction)
Replies
14
Views
3K
3 balls rolling down different-shaped inclined platforms
Replies
8
Views
2K
Why the large ball falls farther than the smaller one?
Replies
31
Views
4K
Confused on potential energy losses and regain.
Replies
1
Views
1K
Calculating Theoretical Reaction Force of Ball Traveling in Semi-Circle
Replies
43
Views
4K
What is the Correct Calculation for h/H When Ball A Collides with Ball B?
Replies
3
Views
2K
One ball dropped, another ball launched
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top