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AP EAMCET202018 Sep 2020Morning ShiftPhysicsMotion in One DimensionActual

The displacement of a body when it covers a distance of (C / 4 ) (where, (C ) is circumference) along the circumference of the circle of radius (r ) with a uniform speed (u ) is

Options

  1. A(r )
  2. B(r 2 )
  3. C(2 r )
  4. D( r 2 )

Correct answer

B. (r 2 )

Step-by-step solution

The given situation is shown in the figure When body covers ( C 4 ) distance, where (C ) is circumference, then it reaches from point (A ) to (B ) as shown in the figure. ( aligned Displacement, A B & = O A^2+O B^2 & = r^2+r^2 = 2 r^2 =r 2 aligned )

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