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Concepts Of Physics MCQ Edition [Volume 1]PhysicsIntroduction to Physics

Determine the dimensions of torque . Some of the equations involving related quantities are = ₂ - ₁ t₂ - t₁ , = ₂ - ₁ t₂ - t₁ , = F r and I = mr^2 . The symbols have standard meanings.

Options

  1. AML T⁻²
  2. BML^2 T⁻²
  3. CML^2 T⁻¹
  4. DML^2

Correct answer

B. ML^2 T⁻²

Step-by-step solution

Torque is given by the product of force F and distance r . = F r The dimensional formula of force F is [M L T⁻²] . The dimensional formula of distance r is [L] . Substituting these dimensions into the formula for torque: [ ] = [M L T⁻²] [L] = [M L^2 T⁻²]

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