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प्रश्न
How does the friction at the fulcrum affect the mechanical advantage of the lever?
उत्तर
Friction at the fulcrum reduces the mechanical advantage.
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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 equal to 1?
Name the class to which the following lever belong:
a pair of sugar tongs
Name the class to which the following lever belong:
a wheelbarrow
Name the class to which the following lever belong:
a see-saw
Name the class to which the following levers belong:
a pair of pliers
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
A catapult
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).
