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प्रश्न
The following belong to which class of lever?
A fire tongs
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उत्तर
Third-class of lever
संबंधित प्रश्न
Name a machine to obtain gain in speed?
shows a nut cracker name the class of lever ?
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?
An oar of a boat
The following belong to which class of lever?
Wheelbarrow
The following belong to which class of lever?
Nutcracker
The following belong to which class of lever?
Fore-arm
Draw a labelled sketch of a second class lever. Give one example of such a lever.
The diagram shows the use of a lever.
- State the principle of moments as applied to the above lever.
- Which class of lever is this? Give an example of this class of lever.
- If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
