A planet moving along an elliptical orbit is closest to the sun at a distance of r₁

A Planet Moving Along An Elliptical Orbit Is Closest To Physics QuestionA Planet Moving Along An Elliptical Orbit Is Closest To Physics Question

A planet moving along an elliptical orbit is closest to the sun at a distance of r₁. If v₁ and v₂ are the linear velocities at these points respectively then the ratio v₁ / v₂ is

Options

(a) ( r₁ / r₂)²
(b) r₂ / r₁
(c) (r₂ / r₁)²
(d) r₁ / r₂

Correct Answer:

r₂ / r₁

Explanation:

Angular momentum is conserved
L₁ = L₂ ⇒ mr₁v₁ = mr₂v₂ ⇒ r₁v₁ = r₂v₂
⇒ v₁ / v₂ = r₂ / r₁

AddThis Website Tools
admin:

Related Questions

  1. If n₁, n₂ and n₃ are the fundamental frequencies of three segments into which a string
  2. Nickel shows ferromagnetic property at room temperature. If the temperature is
  3. The value of n so that vectors 2i+3j-2k, 5i+nj+k and -i+2j+3k may be coplanar,will be
  4. An aeroplane is flying horizontally with a velocity of 216 km/h at a height of 1960 m.
  5. Masses of three wires of copper are in the ratio of 1:3:5 and their lengths