Calculating Volume Using Buoyancy: A Homework Help Guide

  • Thread starter Thread starter David M
  • Start date Start date
  • Tags Tags
    Buoyancy Homework
AI Thread Summary
To calculate the volume of a rubber ball floating in water, one can use the principle of buoyancy. Given that 20% of the ball is above water, it displaces a volume of water equal to the submerged portion. The ball's mass is 3 kg, and with water's density at 1000 kg/m^3, the volume of the ball can be determined using the formula for buoyancy. It's important to follow the forum's guidelines for posting homework questions to ensure clarity and proper assistance. Understanding these principles will help in solving similar buoyancy-related problems.
David M
Messages
1
Reaction score
0
Twenty per cent (20%) of a rubber ball is floating above the surface of a pool of water. If water has a density of 1000 kg/m^3 and the ball has a mass of 3 kilograms, what is the volume of the ball?
 
Physics news on Phys.org
Welcome to PF, David M.

There's a whole section of the PF website which is set up especially for posting HW threads.

Please review the Rules about using the HW template to post HW threads. You'll have a better experience than posting such threads to the wrong forum.
 
  • Like
Likes David M

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

Ice Core Density Problem (Inspired by NEEM)
Replies
6
Views
461
Finding the density of a block in two layers of liquids
Replies
6
Views
2K
Buoyancy force when a ramp is under water
Replies
15
Views
2K
Buoyancy and the Archimedes Principle
Replies
6
Views
2K
Solving the Mystery of a Floating Bottle: Density & Volume
Replies
15
Views
2K
Finding volume of a submerged object
Replies
8
Views
6K
What is the spring's length and constant in Hooke's law with buoyancy force?
Replies
2
Views
2K
How to Calculate Upward Force on Each Anchorage?
Replies
3
Views
2K
Calculating Buoyancy Force & Length of Submerged Cube
Replies
11
Views
2K
Submarine Buoyancy Differential Equation
Replies
3
Views
3K

Hot Threads

Recent Insights

Back
Top