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NEET2004PhysicsMotion in Two DimensionsActual

The earth of mass =6 10²⁴ ~kg revolves around the sun with an angular velocity of 2 10⁻⁷ rad / s in a circular orbit of radius 1.5 10^8 ~km . The force exerted by the sun on earth is :

Options

  1. A6 10¹⁹ ~N
  2. B18 10²⁵ ~N
  3. C36 10²¹ ~N
  4. D27 10³⁹ ~N

Correct answer

C. 36 10²¹ ~N

Step-by-step solution

Here: Mass of earth M_e=6 10²⁴ ~kg Angular velocity of earth =2 10⁻⁷ rad / s Radius of circular orbit aligned R & =1.5 10^8 ~km & =1.5 10¹¹ ~m aligned Force exerted on the earth by the sun is given by aligned F & =M_e R ^2 & =6 10²⁴ 1.5 10¹¹ (2 10⁻⁷ )^2 & =36 10²¹ ~N aligned

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