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MHT CET2019Morning ShiftPhysicsRotational MotionActual

A rod l m long is acted upon by a couple as shown in the figure. The moment of couple is τ Nm. If the force at each end of the rod, then magnitude of each force is s i n 30 o = c o s 60 o = 0.5

Options

  1. Aτ l
  2. Bl 2 τ
  3. C2 τ l
  4. D2 l τ

Correct answer

C. 2 τ l

Step-by-step solution

Length of rod = l Moment of couple, l τ = F l s i n θ ∴ F = τ l s i n θ - τ l s i n 30 o = τ l × 1 2 Force, F = 2 τ l

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