Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 11
What is the gravitational force on a body of mass 10 kg located at a distance equal to half the Earth's radius above its surface? Assume the mass of the Earth is 5.97 × 10^24 kg and its radius is 6.37 × 10^6 m.
A
28.0 N
B
42.0 N
C
63.0 N
D
84.0 N
Correct Answer
Option A
Detailed Explanation
The gravitational force at a height h equal to half the Earth's radius is given by F = G * M_E * m / (R_E + h)^2. Using h = 0.5 R_E, the force is approximately 28.0 N.
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