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प्रश्न
Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.
उत्तर
- A pair of scissors used to cut a piece of cloth has blades longer than the handles, so the blades move longer on the cloth than the movement at the handles.
- Shears used for cutting metals have short blades and long handles because this enables us to overcome a large resistive force with a small effort.
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संबंधित प्रश्न
Fill in the blank:
In class II levers, the load is in between fulcrum and .........
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Give one example of a class I lever in a case where the mechanical advantage is less than 1?
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Draw a labelled diagram of a class II lever. Give one example of such a lever.
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