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Wheels are made circular. Why ?...

Wheels are made circular. Why ?

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The correct Answer is:
Rolling friction is less than sliding friction.
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CBSE COMPLEMENTARY MATERIAL-NEWTON'S LAWS OF MOTION-Laws Of Motion
  1. Wheels are made circular. Why ?

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  2. The maximum velocity (in m/s) with which a car driver must transverse ...

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  3. The tension in the string shown in figure m-2m to F is.

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  4. F particle moves in x-y plane under the action of force vecF such that...

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  5. Three forces vecA =hati+hatj-hatk, vecB=2hati-hatj+3hatk and vecC are...

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  6. The objects at rest suddenly explodes into three parts with the mass r...

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  7. Two Iron blocks of equal masses but with double surface area slide dow...

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  8. A body of mass M starts sliding down an Inclined plane where critical ...

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  9. Three block of masses m1, m2 & M3 are connected by mass less stings as...

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  10. If the tension in the cable supporting an elevator is equal to the wei...

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  11. A graph is drawn with a force along y-axis and time along x-axis. The ...

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  12. In a game of tug of wars, a condition of equilibrium exists. Both the ...

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  13. A bullet of mass m moving with a speed v strikes a wooden block of mas...

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  14. The pulley & strings shown in figure are smooth and of negligible mass...

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  15. If two forces are acting at a point such that the magnitude of each fo...

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  16. The dimensions of action are

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  17. Which of the four arrangements in the figure correctly shows the vecto...

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  18. A car when passes through a bridge exerts a force on it which is equal...

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  19. In the figure given, the position-time graph of a particle of mass 0.1...

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  20. A particle revolves round a circular path. The acceleration of the par...

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  21. If Maximum and minimum values of the resultant of two forces acting at...

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