Asked by Mel
A uniform rod of length 176 cm is bent at its midpoint into a right angle. Then the bent rod is placed along the negative x and positive y axes, with the "bend point" located at the origin. What are the x and y coordinates of the center of mass of this object?
my thoughts were that the coordinates were just (.44, .44) but it's incorrect. can someone help?
my thoughts were that the coordinates were just (.44, .44) but it's incorrect. can someone help?
Answers
Answered by
bobpursley
the cm along the x axis is 1/2 (-176/2) or -.44 m, and along the y axis .44m
You missed the sign.
You missed the sign.
Answered by
Mel
Why is it negative?
I just plugged them into the computer, and it isn't accepting that answer. (-.44m, .44m), that is.
I just plugged them into the computer, and it isn't accepting that answer. (-.44m, .44m), that is.
Answered by
drwls
Perhaps they want the answer in cm.
The x coordinate of the C.M. is negative because half of the bent rod is in the -x region and the other half is along the x=0 axis.
The x coordinate of the C.M. is negative because half of the bent rod is in the -x region and the other half is along the x=0 axis.
Answered by
Mel
I definitely missed that. Thanks.
I got an answer of -22 cm on x, and 22cm on y, put it into the computer, and it's right.
I got an answer of -22 cm on x, and 22cm on y, put it into the computer, and it's right.