Posted by Avalon on Monday, November 22, 2010 at 9:12pm.
A uniform piece of wire, 30 cm long, is bent in the center to give it an Lshape. How far from the bend is the center of mass?
I know that the center of mass is
([m1]x+[m2]x)/([m1]+m2]), but I don't quite understand how to apply it to this problem.

Physics  MathMate, Monday, November 22, 2010 at 11:35pm
Do the calculations separately in the x and the y directions.
Let each of the 15cm segments lie along the x, and yaxes, with the bend at the origin.
Apply
([m1]x+[m2]x)/([m1]+m2])
to get, along the xaxis:
m1=15, m2=15, x1=7.5, x2=0
x0=(m1x+m2x)/(m1+m2)
=(7.5*15+0)/(15+15)
=3.75
Solve similarly for y0.
Answer This Question
Related Questions
 Physics  I understand the basics of the center of mass, but I'm having a hard ...
 College physics  Center of mass  College Physics Center of Mass? The objects ...
 physics  A uniform thin wire is bent into a semicircle of radius r. Determine ...
 physics  A uniform thin wire is bent into a semicircle of radius r. Determine ...
 Physics  a uniform thin wire is bent into a semicircle of radius r, determine ...
 Physics  The mass of a star in a galaxy far, far away, is 2.13 × 105 Earth ...
 Ap physics 1  The mass of a star in a galaxy far, far away, is 3.12 × 105 Earth...
 Physics  A uniform rod of length 176 cm is bent at its midpoint into a right ...
 physics  To balance a 29.8 kg automobile tire and wheel, a mechanic must place ...
 physics  To balance a 40.8kg automobile tire and wheel, a mechanic must place ...
More Related Questions