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11th Class Physics Systems Of Particles & Rotational Motion / कणों के निकाय तथा घूर्णी गति Question Bank 11th CBSE Physics Rotational Motion

  • question_answer
    A planet revolves around a massive star in a highly elliptical orbit. Is its angular momentum constant over the entire orbit?

    Answer:

                    Yes, angular momentum of the planet is constant over the entire orbit. This is because revolution of planet around the star is under the effect of gravitational force between the star and the planet. This is a radial force whose torque is zero. Therefore, angular momentum of the planet is a constant (vector), whatever be the nature of the orbit.                


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