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Show that sum of P.E. and k.E. of a free...

Show that sum of P.E. and k.E. of a freely falling body is conserved.

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JBD PUBLICATION-Model Test Paper 11-EXERCISE
  1. Oif a force 20 N is applied on a body of mass 5 kg at rest then find t...

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  2. What is the need of banking a circular road?

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  3. Show that sum of P.E. and k.E. of a freely falling body is conserved.

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  4. The displacement x of a body of mass 10 kg moving in one dimension und...

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  5. Define escape velocty. Obtain an expression for the escape velocity of...

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  6. Find an expression for the heat which flows from one pont to the other...

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  7. What is a refrigerator? Calculate its coeficient of performance.

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  8. Deduce the expression for work done in an isothermal process.

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  9. What is periodic motion ? Give few examples .

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  10. Draw a graph to show the variation s of P.E., K.E. and total energy of...

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  11. Explain damped and undamped oscillations.

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  12. What is simple harmonic motion and prove a simple pendulum oscillates ...

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  13. Why telephone wires between two poles become taut in winter?

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  14. Derive an expression for the rise of liquid in a capillary tube and sh...

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  15. What is plastic? What are its different types?

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  16. Define critical velocity and find a relation fo it .Also discuss the i...

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  17. Define centre of mass.

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  18. Prove the theorem of parallel axes.

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  19. Which law is used by a ballet dancer to change her speed or rotation?

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  20. Define moment of inertia

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