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प्रश्न
Which class of lever has the mechanical advantage always more than 1? Give an example.
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उत्तर
The mechanical advantage of class II levers is always more than 1.
Example – Nutcracker, wheelbarrow, bottle opener, etc.
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संबंधित प्रश्न
What is a lever?
Name the class to which the following levers belong:
a pair of pliers
The diagram given below shows the three kinds of levers. Name the class of lever and give one example of the class.
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
How does the friction at the fulcrum affect the mechanical advantage of the lever?
Answer the following.
Name the simplest of all types of machines.
Answer the following in short.
What is the basis of the classification of levers?
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
Wheel barrow
The diagram below shows a rod lifting a stone.
- Mark position of fulcrum F and draw arrows to show the directions of load L and effort E.
- What class of lever is the rod?
- Give one more example of the same class of lever stated in part (b).
