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A spherical planet has a mass Mp and diameter Dp. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to
Options
(a) 4GMp / dp²
(b) GMpm / dp²
(c) GMp / dp²
(d) 4GMpm / dp²
Correct Answer:
4GMp / dp²
Explanation:
Gravitational attraction force on a parcticle B,
Fᵥ = GMₚm / (Dₚ / 2)²
Acceleration of particle due to gravity
a = Fᵥ / m = 4GMₚ / D²ₚ
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An engine pumps water continuously through a hose. Water leaves the hose
- An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
- The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
- Two bubbles A and B (A>B) are joined through a narrow tube. Then
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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