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प्रश्न
State the types (or kinds) of lever, and give two examples of each kind.
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उत्तर
There are three kinds of the lever, depending upon the different positions of the load, fulcrum and the effort.
Type I: When fulcrum is in the middle.
Type II: When the load is between the fulcrum and the effort.
Type III: When the effort lies between the fulcrum and load.
संबंधित प्रश्न
Name a machine to obtain gain in speed ?
What is a lever?
Write down a relation expressing the mechanical advantage of a lever.
Give one example of a class I lever where mechanical advantage is more than one ?
A lever of length 9 cm has its load arm 5 cm long and the effort arm is 9 cm long.
- To which class does it belong?
- Draw a diagram of the lever showing the position of fulcrum F and directions of both the load L and effort E.
- What is the mechanical advantage and velocity ratio if the efficiency is 100%?
- What will be the mechanical advantage and velocity ratio if the efficiency becomes 50%?
The following belong to which class of lever?
The Physical balance
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Sugar tongs
The following belong to which class of lever?
A pair of scissors
In the diagram shown alongside a claw hammer, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows. What class of lever is it? Give one more example of this class of lever.
