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>>Variation in Value of Acceleration due to Gravity
>> $A body weighs 700 N on the surface of th$

Question

A body weighs $700 N$ on the surface of the earth. What is its weight on the surface of a planet, whose mass is $1 / 7$ th and radius is $1 / 2$ as that of the earth?

A

$400 N$

B

$300 N$

C

$700 N$

D

$500 N$

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Updated on : 2022-09-05

Solution

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Correct option is A)

$F = \frac{G M m}{R ^{2}} = 700 N$
If $M \to \frac{M}{7} R \to \frac{R}{2} ∴ F^{1} = \frac{G M m . 4}{7 R ^{2}} = \frac{4}{7} F = \frac{4}{7} * 700 N = 400 N$

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