Starting from Earth’s centre (radius R), which graph correctly depicts the variation of gravitational acceleration g with distance r?
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Question

Starting from Earth’s centre (radius R), which graph correctly depicts the variation of gravitational acceleration g with distance r?

G1 Physics · Accepted Answer

Step 1: Uniform interior density implies g∝r for r<R. Step 2: Outside Earth g∝1/r², and g is continuous at r=R. The graph with a straight rise followed by curved inverse-square fall is Image 2. Final answer: B — Image 2.