• Support PF! Buy your school textbooks, materials and every day products Here!

Fluids Problem help invovling floating

  • #1

Homework Statement


A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the racquetball boat without sinking it? (The density of water is 1000 kg/m3.)



Homework Equations


FB = mobjectg


The Attempt at a Solution


I've tried finding the densities of both objects and equating it to 1000 to find the number of pennies, but it didn't work. What else should I do?
 

Answers and Replies

  • #2
gneill
Mentor
20,792
2,770
What's the buoyant force on a racquetball submerged to half its diameter?
 

Related Threads for: Fluids Problem help invovling floating

  • Last Post
Replies
2
Views
6K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
9
Views
2K
Replies
2
Views
9K
Replies
10
Views
963
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
2K
Top