(a) What is the angular velocity of the phonograph after 0.300 s. (b) How many revolutions has the phonograph spun in this time interval? (c) What is the tangential velocity of a point on the rim of the phonograph at 0.300 s. (d) What is the magnitude of the resultant acceleration of a point on the rim at 0.300 s? Given: A phonograph 0.630 m in diameter rotating with an initial angular velocity of 0.220 rev/s and a constant angular acceleration of 0.800 rev/s^2
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).
(a) What is the
many revolutions has the phonograph spun in this time interval?
(c) What is the tangential velocity of a point on the rim of the
phonograph at 0.300 s. (d) What is the magnitude of the resultant
acceleration of a point on the rim at 0.300 s?
Given: A phonograph 0.630 m in diameter rotating
with an initial angular velocity of 0.220 rev/s and a
constant
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