In the figure below, mass m is rotating about point A on a frictionless surface with a constant velocity vo and a constant radius ro The other mass m was hinged by the cable and it stays in equilibrium thanks to the rotation of the first mass. fo oA Vo The test is repeated by changing the hinged mass to 2m. In this case, find the new constant radius r, in terms of ro and the new constant velocity vi, in terms of vo m 2m
Rigid Body
A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.
Rigid Body Dynamics
Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).
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