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NTA Abhyas JEE Main2020PhysicsMotion in One DimensionPractice

A point moves in the x - y plane according to x = A sin ω t and y = A 1 – cos ω t where A and ω are positive constants. The distance traversed by the point during the time τ is

Options

  1. AA ω 2 τ
  2. BA ω 2 τ
  3. CA ω τ
  4. DA ω τ

Correct answer

C. A ω τ

Step-by-step solution

Distance travelled by point in time t is: S = ∫ 0 τ V → d t ∵ V → = V x 2 + V y 2 Where, V x = d x d t = A ω cos ⁡ ω t and V y = d y d t = A ω sin ⁡ ω t S = ∫ 0 τ A ω d t = A ω τ

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