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JIPMER2019PhysicsMotion in Two Dimensions

A projectile of mass 1 kg is projected with a speed of 10 ~m / s at an angle of 60^ from the horizontal when projectile is at its highest point, its magnitude of angular momentum (about point of projection)

Options

  1. A75 2 Nm / s
  2. B75 4 Nm / s
  3. C75 Nm / s
  4. D150 Nm / s

Correct answer

B. 75 4 Nm / s

Step-by-step solution

aligned & Given, mass of projectile, m =1 ~kg & Speed of projectile, v =10 ~m / s =60^ & Magnitude of angular momentum at highest point, & array r L = mass velocity at highest point perpendicular distance array & = m horizontal component of velocity maximum height & =1 10 60 v ^2 ^2 60^ 2 ~g =10 1 2 10 10 2 10 3 4 & = 75 4 Nm / s aligned

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