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State the conditions under which a force...

State the conditions under which a force does no work.

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MBD-WORK, ENERGY AND POWER-EXAMPLE
  1. An arrow is shot from a bow, from where does it get kinetic energy?

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  2. Can a body have energy without momentum?

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  3. State the conditions under which a force does no work.

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  4. The kinetic energy of a body becomes 4 times its initial value. The ne...

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  5. What are the conditions so that transfer of kinetic energy is maximum ...

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  6. Why is electrical power required at all when the elevator is descendin...

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  7. A body is being raised to height h from the surface of earth. What is ...

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  8. A body is being raised to height h from the surface of earth. What is ...

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  9. Calculate the work done by a car against gravity in moving along a str...

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  10. Give an example of scalar product.

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  11. Name the physical quantity which is expressed as product of force and ...

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  12. What is te relation between joule and kg m?

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  13. Name the physical quantity which is expressed as product of force and ...

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  14. Does the work done in raising a box on a platform depend upon how fast...

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  15. With what type of forces, potential energy is associated?

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  16. Dot product of two vectors obey law.

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  17. Since work is a scalar quantity, can it have negative value?

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  18. Fill in the blanks: is the capacity of doing work.

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  19. Work can be negative or Zero.

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  20. The kinetic energy of a body is always .

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