Question 385: Gravitation

Question

An object of mass $$100 \mathrm{~kg}$$ falls from point $$A$$ to $$B$$ as shown in figure. The change in its weight, corrected to the nearest integer is ($$R_E$$ is the radius of the earth)

Accepted Answer

$$M g^{\prime}=M g \frac{R^2}{(R+h)^2}$$
At $$A$$ $$\quad M g^{\prime}=M g \frac{R^2}{(R+2 R)^2}=\frac{M g}{9}$$
At $$B \quad M g^{\prime}=M g \frac{R}{\left(R+\frac{3 R}{2}\right)^2}=\frac{M g \cdot 4}{25}$$
Change in weight $$=M g \frac{4}{25}-\frac{M g}{9}=49 \mathrm{~N}$$

Answer

49 N

Answer

89 N

Answer

5 N

Answer

10 N

Gravitation

An object of mass $100 \mathrm{~kg} falls from point A to B as shown in figure. The change in its weight, corrected to the nearest integer is (R_E$ is the radius of the earth)

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