An electric turntable 0.750 m in diameter is rotating about a fixed axis with an initial angular velocity of 0.230 rev/s. The angular acceleration is 0.912 rev/s. Part A Compute the angular velocity after a time of 0.191 s. Express your answer in revolutions per second. ? rev/s Submit Request Answer Part B Through how many revolutions has the blade turned in this time interval? Express your answer in revolutions. ? N = rev Submit Request Answer Part C What is the tangential speed of a point on the tip of the blade at time t =0.191 s? Express your answer in meters per second. ?
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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