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The motor of an engineis rotating about ...

The motor of an engineis rotating about its axis with an angular velocity of 120 RPM. it comes to rest in 10 seconds, after being switched off. assuming counts in deceleration calculate the number of revolutions made by it before coming to rest.

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MODERN PUBLICATION-Rotational Motion-Exercise
  1. The motor of an engineis rotating about its axis with an angular veloc...

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  2. What are the properties of cross product?

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  3. What is the condition for two vectors to be parallel to each other?

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  4. Find the condition for two vectors to be perpendicular to each other

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  5. Show that the angle between vecA = hat i -5 hat j and vecB = 2 hat i -...

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  6. If vec A xx vec B = vec C xx vec B show that vec C need not be equal t...

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  7. If vec A xx vec B = vec C xx vec B. When will vec C be equal to vec A...

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  8. Explain, why it is difficult to open a door by pushing or pulling it n...

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  9. While turning the page of a book, we usually apply force perpendicular...

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  10. Torque and work are both defined as force times distance. How do they ...

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  11. A particle moves in a circular path with decreasing speed. what happen...

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  12. A ladder is more apt to slip when you are high up on its than when you...

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  13. A planet revolves around the sun under the effect of gravitational for...

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  14. A projectile acquires angular momentum about its point of projection d...

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  15. What do you mean by mechanical equilibrium of a rigid body?

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  16. State the condition for the rigid body to be in mechanical equilibrium...

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  17. Why does the speed of a planet vary in its orbit around the sun ?

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  18. A heavenly body revolves around a massive star in a highly elliptical ...

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  19. Explain vector product of two vectors. Mention its any two properties.

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  20. Given that vec A = Ax hat i + Ay hat j+Az hatk and vec B = Bx hat i + ...

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  21. Derive an expression for the area of a triangle in terms of the cross-...

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