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If radius of earth becomes half, then fi...

If radius of earth becomes half, then find the weight.

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`implies` Weight `W = mg =(GM_em)/R_e^2`
Since the radius becomes half,
`W. = mg. = (GM_(e) m)/((R_e^2)/4)`
`:. W. = 4 ((GM_em)/R_e^2)`
`W. = 4W`
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KUMAR PRAKASHAN-GRAVITATION-Section - C Objective Questions (VSQs)
  1. What is the torque acting on the centre of mass due to gravitational f...

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  2. If the radius of the earth is doubled without changing its mass, what ...

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  3. If radius of earth becomes half, then find the weight.

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  4. If the radius of the earth becomes half of its present value but its d...

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  5. The radii of two planets are R1 and R2 and their densities are rho1 an...

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  6. Distance between two bodies A and B is r. The gravitational force acti...

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  7. What is the acceleration due to gravity on the surface of a planet tha...

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  8. What is effect due to latitude on the acceleration due to gravity of a...

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  9. Find g on polar region due to rotation of earth.

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  10. Find g on equator due to rotation of earth.

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  11. Find the difference between 'g' on pole and 'g' on equator due to rota...

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  12. Shape of the earth is not perfect spherical. How we can say ?

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  13. Why do we feel dizzy on a merry-go-round rotating in vertically upward...

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  14. At which place on the surface of the earth the value of g is maximum ?...

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  15. If both the mass and the radius of earth decrese by 1% find percentage...

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  16. If a person goes to a height equal to radius of earth from its surface...

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  17. How is acceleration due to gravity affected by rotation of earth about...

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  18. If earth stops rotating, what is effect in the value of 'g' at equator...

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  19. When an spacecraft goes from earth to moon along a straight path, what...

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  20. Which is the important physical quantity required for the description ...

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