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What is the use of a lever if its mechan...

What is the use of a lever if its mechanical advantage is (a) more than 1, (b) equal to 1, and (c) less than 1.

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ICSE-MACHINES-EXERCISE-3(A)
  1. Name the three classes of levers and state how are they distinguished....

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  2. Give one example each of a class I lever where mechanical advantage is...

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  3. What is the use of a lever if its mechanical advantage is (a) more tha...

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  4. Both a pair of scissors and a pair of pliers belong to the same class ...

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  5. Explain why scissors for cutting cloth may have blades longer than the...

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  6. Figure, shows a uniform metre rule of weight W supported on a fulcrum ...

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  7. Which typ eof lever has mechanical advantage always more than 1 ? Give...

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  8. Draw a diagram of a lever which is always used as a force multiplier. ...

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  9. Explain why mechanical advantage of a class II lever is always more th...

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  10. Draw a labelled diagram of a class II lever. Give one example of such ...

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  11. Figure, shows a lemon crushes, (a) In the diagram, mark the position...

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  12. The diagram below shows a rod lifting a stone. (a) Mark position of ...

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  13. State the kind of lever which always has mechanical advantage less tha...

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  14. Explain why mechanical advantage of class III lever is always less tha...

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  15. Class III levers have mechanical advantage less than 1. why are they t...

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  16. Draw a labelled sketch of a class III lever. Give one example of this ...

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  17. State the class of levers and the relative positions of load (L), effo...

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  18. Draw diagrams to illustrate the positions of fulcrum, load and effort,...

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  19. Classify the following into levers as class I, class II or class III: ...

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  20. What type of lever is formed by a human body while (a) raising a load ...

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