NEET · Physics · STD 11 - 7. gravitation
A body weighs 48 N on the surface of the earth. The gravitational force experienced by the body due to the earth at a height equal to one-third the radius of the earth from its surface is :
- A 16 N
- B 27 N
- C 32 N
- D 36 N
Answer & Solution
Correct Answer
(B) 27 N
Step-by-step Solution
Detailed explanation
\(W ^{\prime}= mg ^{\prime}= mg \left(\frac{ R }{ R + h }\right)^2 \)
\( =48\left(\frac{ R }{ R +\frac{ R }{3}}\right)^2 \)
\( =48 \times \frac{9}{16}=27 N\)
\( =48\left(\frac{ R }{ R +\frac{ R }{3}}\right)^2 \)
\( =48 \times \frac{9}{16}=27 N\)
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