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प्रश्न
Name the class to which the following lever belong:
an oar rowing a boat.
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उत्तर
an oar rowing a boat: Class I lever
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संबंधित प्रश्न
Describe three orders of levers giving an example of each. Draw neat diagrams showing the positions of fulcrum, load, and effort in each kind of lever.
Which class of lever has the mechanical advantage always less than 1? Give an example.
Name the class to which the following lever belong:
a nutcracker
The diagram given below shows the three kinds of levers. Name the class of lever and give one example of the class.

A lever of length 100 cm has the effort of 15 kgf at a distance of 40 cm from the fulcrum at one end. What load can be applied at its other end?
Answer the following.
Name the simplest of all types of machines.
Both a pair of scissors and a pair of pliers belong to the same class of levers. Name the class of lever. Which one has the mechanical advantage less than 1?
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Class III levers have mechanical advantage less than one. Why are they then used?
Classify the following into levers:
Wheel barrow
