First slide

Variation of g

Question

If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct?

Easy

A

Raindrops will fall faster
B

Walking on the ground would become more difficult.
C

Time period of a simple pendulum on the Earth would decrease.
D

g on the Earth will not change.

Solution

If universal Gravitational constant becomes ten times, then $G^{'} = 10 G .$
So, acceleration due to gravity increases.
i.e, (d) is wrong option.

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