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Manipal MET2010PhysicsRotational Motion

A constant torque acting on a uniform circular wheel changes its angular momentum from A₀ to 4 A₀ in 4 s . The magnitude of this torque is

Options

  1. A3 A₀ 4
  2. BA₀
  3. C4 A₀
  4. D12 A₀

Correct answer

A. 3 A₀ 4

Step-by-step solution

Torque = dL d t = L₂-L₁ t = 4 A₀-A₀ 4 = 3 A₀ 4

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