Understanding Angular Acceleration in Rigid Bodies Pivoting on a Fixed Axis

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Angular acceleration in rigid bodies pivoting on a fixed axis is determined by the net torque acting on the system divided by the moment of inertia. In this scenario, three point masses are subjected to specific forces, and their positions relative to the axis of rotation will influence the torque calculations. The forces acting on each mass need to be analyzed to compute the total torque about the origin. The final angular acceleration will indeed be expressed in radians per second squared (rad/s²). Understanding these principles is essential for solving problems related to angular motion in rigid bodies.
alchemyacoustic
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i haven't been able to figure this one out... i have trouble following the explantion from my instructor. thanks for any help in advance

A rigid object consists of a point mass of 2 kg momentarily located at (-3, 2) m with a force of (6, 2) N acting on it, a second point mass of 3 kg momentarily at (6, -2) m with a force of (3, -4) N acting on it, and a third point mass of 1 kg momentarily at (-2, -5) m with a force of (5, 5) N acting on it. Suppose this rigid three-particle object can only rotate about an axis passing through the origin and perpendicularly the x y plane. (This means the axis also exerts forces on our rigid object.) What is the angular acceleration of our rigid object about this axis?
 
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would the answer be in rad/s squared?
 
alchemyacoustic said:
would the answer be in rad/s squared?

Yes it would. What do you know about the angular motion of rigid bodies that pivot on a fixed axis?
 

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