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In which direction does the force need t...

In which direction does the force need to be applied, when a single pulley is used with a mechanical advantage greater than 1 ? How can you change the direction of force applied without altering its mechanical advantage ? Draw a labelled diagram of the system.

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ICSE-MACHINES-EXERCISE-3(B)
  1. What is a fixed pulley ? State its one use.

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  2. What is the ideal mechanical advantage of a single fixed pulley ? Can ...

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  3. Name the pulley which has no gain in mechanical advantage. Explain, wh...

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  4. What is the velocity ratio of a single fixed Pulley?

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  5. In a single fixed pulley, if the effort moves by a distance x downward...

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  6. What is a single movable pulley ? What is its mechanical advantage in ...

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  7. Name the type of a single pulley that has an ideal mechanical advantag...

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  8. Give two reasons why the efficiency of a single movable pulley is not ...

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  9. In which direction does the force need to be applied, when a single pu...

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  10. What is the velocity ratio of a single movable pulley ? How does the f...

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  11. In a single movable pulley, if the effort moves by a distance x upward...

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  12. Draw a labelled diagram of an arrangement of two pulleys, one fixed an...

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  13. The diagram alongside shows a pulley arrangement. (a) Name the pulle...

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  14. State four differences between a single fixed pulley and a single mova...

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  15. The diagram alongside shows an arrangement of three pulleys A,B and C....

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  16. Draw a diagram of a combination of three movable pulleys and one fixed...

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  17. Draw a diagram of a block and tackle system of pulleys having a veloci...

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  18. Give reasons for the following: (a) In a single fixed pulley, the ve...

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  19. Name a machine which is used to : (a) multiply force, (ii) multipl...

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  20. State whether the following statements are true or false by writing T ...

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