GK QUESTION#3130

In the case of a rigid body rotating about a fixed axis, the angular velocity of every particle in the body is:

ADirectly proportional to its distance from the axis of rotation
BEqual to zero for all particles
CInversely proportional to its distance from the axis of rotation
DThe same for all particles of the bodyCorrect answer

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Answer

D. The same for all particles of the body

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Explanation

In rotation of a rigid body about a fixed axis, all parts share the body’s angular velocity at a given instant. Linear speed isv=ωr for a point a perpendicular distancer from that axis; it is zero on the axis. Equal angular velocity does not imply equal linear speed.

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In the case of a rigid body rotating about a fixed axis, the angular velocity of every particle in the body is:

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Explanation

In the case of a rigid body rotating about a fixed axis, the angular velocity of every particle in the body is:

Answer

Explanation

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