Sharon the ant (Aaron’s sister) sits at the edge of a turntable of radius R that is spinning with period T. As she makes one-half of a full rotation on the turntable, what is the magnitude of the average acceleration experienced by Sharon the ant?

Respuesta :

Answer:

[tex]a = \dfrac{4\pi^2R}{T^2}[/tex]

Explanation:

The acceleration of a circular motion is given by

[tex]a = \omega^2 R[/tex]

where [tex]\omega[/tex] is the angular velocity and [tex]R[/tex] is the radius.

Angular velocity is related to the period, T, by

[tex]\omega=\dfrac{2\pi}{T}[/tex]

Substitute into the previous formula.

[tex]a = (\dfrac{2\pi}{T})^2 R[/tex]

[tex]a = \dfrac{4\pi^2R}{T^2}[/tex]

This acceleration does not depend on the linear or angular displacement. Hence, the amount of rotation does not change it.