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The work done on an object does not depe...

The work done on an object does not depend on…..

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True or False. Work done on an object depends on time.

You have learnt how to calculate the work done on an object when the displacement is in the direction of the applied force. But if the displacement is not in the direction of the applied force, how do we calculate the amount of work done

Why is the work done on an object moving with uniform circular motion zero?

Answer the following questions: State the condition under which the work done is (i) positive (ii) negative(iii) zero. Why is the work done on an object moving with uniform circular motion zero?

Name the following An exmple where fprce acting on an object does not do any work.

Answer the following questions: Determine the amount of work done when an object is displaced at an angle of 30^@ with respect to the direction of the applied force.

Calculate the work done to take an object of mass 20 kg to a height of 10 m.

Calculate the work done to take an object of mass 20 kg to a height of 10 m. (g = 9.8 m/s2)

The heat or reaction does not depend upon :

BAL BHARTI-WORK AND ENERGY-Exercises
  1. Choose one or more alternatives: Which of the forces involved in drag...

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  2. Choose one or more alternatives: Power is a measure of the ………

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  3. Choose one or more alternatives: While dragging or lifting an objectm...

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  4. The potential energy of your body isleast when you are……

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  5. The total energy of an object falling freely towards the ground………………....

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  6. If we increase the velocity of a car moving on a flat surface to 4 tim...

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  7. The work done on an object does not depend on…..

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  8. Questions based on paragraph Study the following activity and answer ...

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  9. Questions based on paragraph Study the following activity and answer ...

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  10. Study the following activity and answer the questions: Now take two b...

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  11. Study the following activity and answer the questions: At the moment ...

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  12. Study the following activity and answer the questions: As the balls r...

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  13. Study the following activity and answer the questions: Why do the ball...

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  14. Study the following activity and answer the questions: What is the for...

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  15. Questions based on paragraph Study the following activity and answer ...

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  16. Solve the following examples: An electric pump has 2 kW power. How mu...

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  17. Solve the following examples: If a 1200 W electric iron is used daily...

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  18. Solve the following examples: If the energy of a ball falling from a ...

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  19. The velocity of a car increases from 54 km/hr to 72 km/hr. How much is...

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  20. Solve the following examples: Ravi applied a force of 10 N and moved ...

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