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A certain torque acts on an object to rotate it about an axis, causing the object to move with the angular acceleration of $5\text{ rad/s}^2$.

In a second trial, two changes are made to the parameters of the experiment:

  • The axis is shifted so that the object's rotational inertia is halved.
  • The torque acting on the object is also decreased to half its original value.

Which of the following is the angular acceleration of the object during this second trial?

A

$1.25\text{ rad/s}^2$

B

$2.5 \text{ rad/s}^2$

C

$5\text{ rad/s}^2$

D

$20\text{ rad/s}^2$

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