Questions: Centrifuges are commonly used in biological laboratories for the isolation and maintenance of cell preparations. Suppose a centrifuge rotates with constant angular acceleration. Describe the tangential acceleration component of one of the blood samples that is located near the rim of the centrifuge. Multiple Choice The tangential acceleration constantly changes with time. It is impossible to determine what happens to the tangential acceleration of the blood sample since its location with respect to the center of the centrifuge is not given. The tangential acceleration is zero. The tangential acceleration is constant.

Centrifuges are commonly used in biological laboratories for the isolation and maintenance of cell preparations. Suppose a centrifuge rotates with constant angular acceleration. Describe the tangential acceleration component of one of the blood samples that is located near the rim of the centrifuge.

Multiple Choice
The tangential acceleration constantly changes with time.
It is impossible to determine what happens to the tangential acceleration of the blood sample since its location with respect to the center of the centrifuge is not given.
The tangential acceleration is zero.
The tangential acceleration is constant.
Transcript text: Centrifuges are commonly used in biological laboratories for the isolation and maintenance of cell preparations. Suppose a centrifuge rotates with constant angular acceleration. Describe the tangential acceleration component of one of the blood samples that is located near the rim of the centrifuge. Multiple Choice The tangential acceleration constantly changes with time. It is impossible to determine what happens to the tangential acceleration of the blood sample since its location with respect to the center of the centrifuge is not given. The tangential acceleration is zero. The tangential acceleration is constant.
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Solution

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Solution Steps

Step 1: Understanding Tangential Acceleration

Tangential acceleration refers to the rate of change of the tangential velocity of an object moving along a circular path. It is directly related to the angular acceleration of the rotating system and the radius of the circular path.

Step 2: Relationship Between Angular and Tangential Acceleration

For an object in circular motion, the tangential acceleration \( a_t \) is given by the formula: \[ a_t = \alpha \cdot r \] where \( \alpha \) is the angular acceleration and \( r \) is the radius of the circular path. If the angular acceleration is constant, then the tangential acceleration will also be constant, provided the radius \( r \) does not change.

Step 3: Analyzing the Given Options
  • The tangential acceleration constantly changes with time. This would be true if the angular acceleration were changing, but it is given as constant.
  • It is impossible to determine what happens to the tangential acceleration of the blood sample since its location with respect to the center of the centrifuge is not given. The location (radius) is not needed to determine the nature of the tangential acceleration, only its magnitude.
  • The tangential acceleration is zero. This would be true if there were no angular acceleration, but the problem states there is constant angular acceleration.
  • The tangential acceleration is constant. This is true because the angular acceleration is constant, and the radius does not change.

Final Answer

\(\boxed{\text{The tangential acceleration is constant.}}\)

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