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A steam engine of mass 3xx 10^4 kg pulls...

A steam engine of mass `3xx 10^4` kg pulls two wagons each of mass `2 xx10^4 `kg with an acceleration of ` 0.2 ms ^(-2)`. Neglecting frictional force, calculate the :force exerted by the engine.

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JBD PUBLICATION-MODEL TEST PAPER -08-EXERCISE
  1. A bullet is fired at an anlge 30^@ in horizontal with velocity 300 m s...

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  2. Define centripetal force and find an expression for it.

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  3. A steam engine of mass 3xx 10^4 kg pulls two wagons each of mass 2 xx1...

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  4. Define potential enrgy of a body .Find an expression for the potential...

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  5. How does value of acceleration due to gravity vary with altitude

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  6. Explain different modes of transfer of heat from one place to the othe...

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  7. What do you mean by thermal equilibrium ?Define zerothe law of thermod...

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  8. Give the main postulates of kinetic theory of matter.

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  9. Write an expression for the frequency produced by a stretched string.

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  10. What are statiionary waves?State their characteristics.

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  11. How is sound propagated ? Can it be propagated through vacuum ? out of...

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  12. What is the effect of pressure on the speed of sound?

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  13. State Hooke's law.

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  14. What is terminal velocity?

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  15. Define latent heat.

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  16. Find a relation between co-efficient of linear expansion and co-effici...

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  17. What are the dimensions and unit of moment of inertia?

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  18. State the principle of conservation of angular momentum.

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  19. What is physical significnce of moment of inertia?

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  20. What is the moment of inertia of a disc about their diameters?

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