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Consider following statements (1) CM o...

Consider following statements
(1) CM of a uniform semicircular disc of radius R is 2R/`pi` from the centre
(2) CM of a uniform semicircular ring of radius R is 4R/3`pi` from the centre
(3) CM of a solid hemisphere of radius R is 4R/3`pi` from the centre
(4) CM of a hemisphere shell of radius R is R/2 from the centre
Which statements are correct?

A

1,2,4

B

1,3,4

C

4 only

D

1, 2 only

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-CENTRE OF MASS-Exercise - 1
  1. Consider following statements (1) CM of a uniform semicircular disc ...

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  2. The centre of mass of two particles system lies

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  3. A uniform square plate ABCD has a mass of 10kg. If two point masses of...

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  4. There is a thin uniform disc of radius R and mass per unit area sigma,...

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  5. In the adjacent diagram, objects 1 and 2 each have mass m while object...

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  6. Four particles of mass 5,3,2,4 kg are at the points (1,6),(-1,5),(2,-3...

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  7. As shown in diagram there are five identical rods. Length of each rod ...

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  8. The position vectors of three particles of mass m(1) = 1kg, m(2) = 2kg...

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  9. Figure shows a uniform disc of radius R, from which a hole of radius R...

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  10. Find the centre of mass of a uniform L shaped lamina (a thin flat plat...

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  11. A graph between kinetic energy and momentum of a particle is plotted a...

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  12. A Wireframe is made of a wire or uniform crosssection. which is shown ...

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  13. Look at the drawing given in the figure which has been drawn with ink ...

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  14. A man of mass M stands at one end of a stationary plank of length L, l...

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  15. Two balls A and B of masses 100gm and 250 gm respectively are connecte...

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  16. A particle of mass 3m is projected from the ground at some angle with ...

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  17. A man weighing 80 kg is standing at the centre of a flat boat and he i...

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  18. Two particles having mass ratio n:1 are interconnected by a light inex...

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  19. Internal forces can change

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  20. A small sphere is moving at a constant speed in a vertical circle. Bel...

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  21. Which of the following graphs represents the graphical relation betwee...

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