Question

2. (3 points) A horizontal disk rotates about a vertical axis through its center. Point P is midway between the center and the rim of the disk, and point Q is on the rim. If the disk's rotation is accelerating, which of the following statements about it are true at any instant in time? Explain briefly! (There may be more than one correct choice.) a) The linear acceleration of Q is twice as great as the linear acceleration of P. b) Q is moving twice as fast as P. c) The linear acceleration of P is twice as great as the linear acceleration of Q. d) P and Q have the same linear acceleration. e) The angular velocity of Q is twice as great as the angular velocity of P.

          2. (3 points) A horizontal disk rotates about a vertical axis through its center. Point P is midway between the center and the rim of the disk, and point Q is on the rim. If the disk's rotation is accelerating, which of the following statements about it are true at any instant in time? Explain briefly!
(There may be more than one correct choice.)

a) The linear acceleration of Q is twice as great as the linear acceleration of P.
b) Q is moving twice as fast as P.
c) The linear acceleration of P is twice as great as the linear acceleration of Q.
d) P and Q have the same linear acceleration.
e) The angular velocity of Q is twice as great as the angular velocity of P.

2. (3 points) A horizontal disk rotates about a vertical axis through its center. Point P is midway between the center and the rim of the disk, and point Q is on the rim. If the disk's rotation is accelerating, which of the following statements about it are true at any instant in time? Explain briefly!
(There may be more than one correct choice.)

a) The linear acceleration of Q is twice as great as the linear acceleration of P.
b) Q is moving twice as fast as P.
c) The linear acceleration of P is twice as great as the linear acceleration of Q.
d) P and Q have the same linear acceleration.
e) The angular velocity of Q is twice as great as the angular velocity of P.

Added by Vanessa H.

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