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NEET 2024
Exam
NEET
Year
2024
Subject
Physics
Chapter
Gravitation

NEET 2024 · Physics · Gravitation

An object of mass 100 kg falls from point A to B as shown in...

An object of mass 100 kg falls from point AA to BB as shown in figure. The change in its weight, corrected to the nearest integer is ( RER_E is the radius of the earth) An object of mass 100 kg falls from point A to B as shown in figure. The change in its weight, corrected to the nearest

Options

  1. A49 N
  2. B89 N
  3. C5 N
  4. D10 N

Correct answer

A. 49 N

Step-by-step solution

Mg′=MgR2(R+h)2M g^{\prime}=M g \frac{R^2}{(R+h)^2} At A Mg′=MgR2(R+2R)2=Mg9\quad M g^{\prime}=M g \frac{R^2}{(R+2 R)^2}=\frac{M g}{9} At BMg′=MgR(R+3R2)2=Mg⋅425B \quad M g^{\prime}=M g \frac{R}{\left(R+\frac{3 R}{2}\right)^2}=\frac{M g \cdot 4}{25} Change in weight =Mg425−Mg9=49 N=M g \frac{4}{25}-\frac{M g}{9}=49 \mathrm{~N}
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