A Horizontal Disk Rotates About a Vertical Axis Through Its

question 18

Multiple Choice

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 turns with constant angular velocity,which of the following statements about it are true? (There may be more than one correct choice.)

• A) P and Q have the same linear acceleration.
• B) Q is moving twice as fast as P.
• C) The linear acceleration of Q is twice as great as the linear acceleration of P.
• D) The linear acceleration of P is twice as great as the linear acceleration of Q.
• E) The angular velocity of Q is twice as great as the angular velocity of P.

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Definitions:

Cohesion

The degree to which members of a group are connected to each other, fostering unity and a sense of belonging.

Punctuated Equilibrium Model

A theory in evolutionary biology and political science suggesting that changes occur in rapid, significant bursts followed by periods of stability.

Group Development

The stages and processes that a group undergoes from formation to maturity, facilitating effective collaboration and achieving objectives.

Stages of Orientation

The initial phase in group development where members get to know each other and establish basic expectations about the group and their role within it.