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You are given circular discs of equal ma...

You are given circular discs of equal masses and thickness, but one is made of iron and the other of alminium. Which one will have large MI about the central axis?

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The disc of aluminium will have larger surface area and hence larger distribution of particles than the disc of iron. Hence the disc of aluminium has larger MI.
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BINA LIBRARY-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-EXERCISE
  1. Show that a cylinder will slip over an inclined plane of inclination t...

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  2. A solid sphere and a hollow sphere of the same mass and diameter, both...

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  3. You are given circular discs of equal masses and thickness, but one is...

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  4. How can you distinguish a raw egg from a boiled egg by spinning it on ...

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  5. If the ice on the polar cap of the earth melts how will it effect the...

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  6. If the earth suddenly shirnks, what will happen to the length of the d...

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  7. The MI of the rotating bodies A and B are IA and IB. IA>IB, but the bo...

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  8. If two circular discs of same weight and thickness are made from meta...

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  9. Three bodies - a ring, a solid cylinder and a solid sphere of same mas...

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  10. A body of radius R and mass m is rolling horizontally without slipping...

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  11. A disc of mass 5 kg radius 0.5 m rolls on the ground at the rate of 10...

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  12. An engine needs to transmit a torque of 180 Nm to maintain a rotor ar ...

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  13. A 40 kg flywheel in from of a circular disc of =1 m radius is making 1...

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  14. A rope of negligible mass is wound around a hollow cylinder of mass 3 ...

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  15. If the earth suddenly contracts to one third of its present radius, ho...

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  16. Torque of a force F = -3hati + hatj +5hatk acting at the point r = 7h...

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  17. The radius is 2hati + hatj +hatk, While linear momentum is 2hati +3hat...

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  18. A man is moving with a constant velocity along a line parallel to X-ax...

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  19. A solid sphere is moving on a horizontal plane. Ratio of its translati...

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  20. If a sphere is rolling, the ratio of its rotational K.E to total energ...

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