(II) A cooling fan is turned off when it is running at 850 rev/minIt turns 1250 revolutions before it comes to a stop. (a) What was the fan’s angular acceleration, assumedconstant? (b) How long did it take the fan to come to acomplete stop?
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).
(II) A cooling fan is turned off when it is running at 850 rev/min
It turns 1250 revolutions before it comes to a stop.
(a) What was the fan’s
constant? (b) How long did it take the fan to come to a
complete stop?
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