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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
What is a lever?
Which class of lever has the mechanical advantage always more than 1? Give an example.
Give one example of a class I lever in a case where the mechanical advantage is less than 1?
Name the class to which the following lever belong:
a see-saw
Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.
Draw a labelled diagram of a class II lever. Give one example of such a lever.
Class III levers have mechanical advantage less than one. Why are they then used?
Classify the following into levers:
A catapult
Differentiate Class I lever and Class II lever.
Classify the following into levers:
Claw hammer
