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NEET 2018
Exam
NEET
Year
2018
Subject
Physics
Chapter
Gravitation

NEET 2018 · Physics · Gravitation

If the mass of the Sun were ten times smaller and the universal...

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?

Options

  1. ATime period of a simple pendulum on the Earth would decrease
  2. BWalking on the ground would become more difficult
  3. CRaindrops will fall faster
  4. Dgg on the Earth will not change

Correct answer

D. gg on the Earth will not change

Step-by-step solution

ms′=ms10andG′=10G{m}_{s}^{′} = \dfrac{{m}_{s}}{10}and{G}^{′} = 10G

gE=G′MER2=10GMER2=10g{g}_{E} = \dfrac{{G}^{′}{M}_{E}}{{R}^{2}} = \dfrac{10G{M}_{E}}{{R}^{2}} = 10g

∴∴ Raindrops will fall faster, Walking on the ground would become more difficult, Time period of a simple pendulum on the earth would decrease.
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