Finding Center of mass

  • Thread starter Oomair
  • Start date
  • #1
Oomair
36
0
[SOLVED] Finding Center of mass

Homework Statement




Three cubes, of side 0, 20, and 30, are placed next to one another (in contact) with their centers along a straight line as shown in the figure. What is the position, along this line, of the CM of this system? Assume the cubes are made of the same uniform material and 0 = 2.5 cm.




Homework Equations



Xcm = m1x1 + m2x2.../ m1 + m2 +...

The Attempt at a Solution



it does not give the mass of the cubes, so i don't know how to relate to such a problem
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
26,263
621
If they have the same density, then you may not know the masses, but you know the ratio of the masses. That's all you need to know. Assume any density you like and work it out. Now choose another density and work it out. You'll get the same answer.
 

Suggested for: Finding Center of mass

Replies
10
Views
401
Replies
6
Views
437
  • Last Post
Replies
3
Views
447
Replies
7
Views
293
Replies
19
Views
2K
Replies
8
Views
475
  • Last Post
Replies
2
Views
59
Replies
5
Views
387
Replies
9
Views
275
Top