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NEET Physics QUESTION #1060
Question 1
A body weighs 48 N on Earth surface. Gravitational force at height \(h = R/3\) from surface is:
  • 32 N
  • 36 N
  • 16 N
  • 27 N✔️
Correct Answer Explanation
At height \(h\): \(g_h = \frac{GM}{(R+h)^2} = \frac{g}{(1+h/R)^2}\). \(h=R/3\Rightarrow 1+h/R=4/3\). \(g_h=\frac{g}{(4/3)^2}=\frac{9g}{16}\). Weight \(=48\times\frac{9}{16}=27\ \text{N}\).