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JEE Main20206 Sep 2020Morning ShiftPhysicsMotion in Two DimensionsActual

A clock has a continuously moving second's hand of 0 . 1 m length. The average acceleration of the tip of the hand (in units of ms - 2 ]) is of the order of :

Options

  1. A10 - 3
  2. B10 - 4
  3. C10 - 2
  4. D10 - 1

Correct answer

A. 10 - 3

Step-by-step solution

The instantaneous acceleration of tip is given by ac = ω 2 R = 2 π 60 2 × 0 . 1 = 1 900 ≈ 10 - 3

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