Asmall planet having a radius of 1000 km exerts a gravitational force of 100 n on an object that is 500 km above its surface. if this object is moved 500 km farther from the planet, the gravitational force on it will be closest to a) 71 n. b) 25 n. c) 56 n. d) 50 n. e) 75 n.

Explanation:

Gravitational force is given by

         G=6.674×10⁻¹¹ m³⋅kg⁻¹⋅s⁻²

         M = Mass of object 1

          m = mass of object 2

          r = Distance between objects.

Here only variable is r value.

In case 1

In case 2

Option C is the correct answer.

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

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