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If the radius of the earth is doubled wi...

If the radius of the earth is doubled without changing its mass, what will be the change in weight of body of m on the surface of earth ?

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`implies` Weight `W = mg = (GM_(e)m)/(R_e^2)`
Radius of the earth is doubled,
Weight W. = mg. `= (GM_(e) m)/(4R_e^2)=W/4 ` becomes `1//4^(th)` of original weight .
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KUMAR PRAKASHAN-GRAVITATION-Section - C Objective Questions (VSQs)
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  2. What is the torque acting on the centre of mass due to gravitational f...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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