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avenkat0
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Homework Statement
c) Three point masses lie on a rigid, rod of no mass and L = 7.71 m :
- Two particles,with the same mass m = 3.27 kg, lie on opposite ends.
- Mass M = 3.24 kg is in the center of the rod.
the rod lies along the x-axis, and rotates about the y-axis. about a point 1.68 m from one end at constant angular speed ω = 5.82 rad/s.
Find the kinetic energy of this system:
Homework Equations
The Attempt at a Solution
- First I calculated the center of mass which i found to be at 3.864 m from one end point.
- I calculated the KE of rotation from the axis running through the cm.
- Then i used the parallel axis theorem. With d being... the distance of the rotation point form rod+the distance of the rod left from the cm
- now with d i used the parallel axis theorem and got the wrong answer
Is my reasoning flawed?
Thank you for your help