Karnataka Board PUCPUC Science Class 11

Let → a Be a Unit Vector Along the Axis of Rotation of a Purely Rotating Body and → B Be a Unit Vector Along the Velocity of a Particle P of the Body Away from the Axis. the Value of → a . → B is - Physics

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MCQ
Fill in the Blanks

Let \[\overrightarrow A\] be a unit vector along the axis of rotation of a purely rotating body and \[\overrightarrow B\] be a unit vector along the velocity of a particle P of the body away from the axis. The value of \[\overrightarrow A.\overrightarrow B\] is ____________ .

Options

  • 1

  • -1

  • 0

  • None of these

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Solution

0

 

For a purely rotating body, the axis of rotation is always perpendicular to the velocity of the particle.
Therefore, we have

\[\overrightarrow A.\overrightarrow B=0\]

  Is there an error in this question or solution?
Chapter 10: Rotational Mechanics - MCQ [Page 193]

APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 1
Chapter 10 Rotational Mechanics
MCQ | Q 1 | Page 193
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