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AP EAMCET2004PhysicsRotational Motion

A particle of mass 1 ~kg is projected with an initial velocity 10 ~ms ⁻¹ at an angle of projection 45^ with the horizontal. The average torque acting on the projectile, between the time at which it is projected and the time at which it strikes the ground, about the point of projection in newton-metre is

Options

  1. A25
  2. B50
  3. C75
  4. D100

Correct answer

B. 50

Step-by-step solution

aligned = d L d t & =m [u^2 ^2 ] & =(1)(10)^2 ^2 45^ =50 Nm . aligned

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