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If the earth shrinks to half its present...

If the earth shrinks to half its present radius, without any change in its mass, then the duration of the day becomes

A

`48h`

B

`24h`

C

`12h`

D

`6h`

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - B) Objective Type Questions (One option is correct)
  1. A disc of radius R and mass M is under pure rolling under the action o...

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  2. A ring of mass m and radius R is acted upon by a force F as shown in t...

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  3. A solid sphere of mass 2kg is pulled by a constant force acting at its...

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  4. A hollow sphere is rolling without slipping on a rough surface. The ra...

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  5. A cylinder is released from the top of an incline making angle theta=4...

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  6. A hollow spherical ball rolls down on a parabolic path AB from a heigh...

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  7. The minimum horizontal force applied to the centre of wheel of radius ...

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  8. A solid cylinder is rolling without slipping with velocity of its cent...

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  9. A cylinder is rolling without slipping on a plank which is also moving...

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  10. Three identical rods A, B and C each having length l are in shape of l...

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  11. A particle of mass m=3kg is projected at an angle of 45^(@) with the h...

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  12. A thin circular ring of mass M and radius r is rotating about its axis...

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  13. A disc is undergoing rolling on a horizontal surface. Which of the sta...

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  14. A theif is running with speed of 10m//s along the line y=10m. The x-y ...

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  15. A rod AB of mass m and length L is rotating in horizontal plane about ...

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  16. A uniform rod of mass M and length L is standing vertically along the ...

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  17. A rod of mass m and length l hinged at the centre is placed on a horiz...

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  18. Consider a body, shown in figure, consisting of two identical balls, e...

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  19. A force vecF=(3hati+4hatj)N is acting on a point mass m=((1)/(2))kg at...

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  20. If the earth shrinks to half its present radius, without any change in...

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