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AP EAMCET202423 May 2024Morning ShiftPhysicsMotion in One DimensionActual

A person walks up a stalled escalator in 90 s . When standing on the same moving escalator he reached in 60 s . The time it would take him to walk up the moving escalator will be.

Options

  1. A36 s
  2. B72 s
  3. C18 s
  4. D27 s

Correct answer

A. 36 s

Step-by-step solution

aligned & t₁= 1 v_m , t₂= 1 v_s & t₃= 1 v_m+v_s = 1 1 t₁ + 1 t₂ = t₁ t₂ t₁+t₂ = 90 60 90+60 =36 ~s aligned

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