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प्रश्न
Answer the following.
What is a Class I lever?
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उत्तर
In Class I levers (also called levers of first order), the fulcrum lies between the load and the effort, i.e., the load and the effort are on the opposite sides of the fulcrum.
Examples: See-saw, pairs of scissors, pliers, beam balance, etc.
The mechanical advantage of a Class I lever is always greater than one. These levers act as force multipliers.
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संबंधित प्रश्न
Give one example of a class I lever where the mechanical advantage is more than 1.
Name the class to which the following lever belong:
a lemon squeezer
Name the class to which the following lever belong:
a pair of sugar tongs
How does the friction at the fulcrum affect the mechanical advantage of the lever?
Name the machine to which the following belong:
Beam balance
Answer the following.
Name the simplest of all types of machines.
Answer the following in a word or two or in a sentence.
Given an example of a Class I lever.
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
Classify the following into levers:
A fishing rod
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).
