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प्रश्न
The following are an example of levers. State the class of lever to which each one belongs giving the relative positions of Load (L), Effort (E), Fulcrum (F):
(i) Scissors (ii) Sugar tongs (iii) Nutcracker (iv) Pliers.
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उत्तर
| Name of Lever | Lever Class | Fulcrum | Position of Effort | Load | ||
| (i) | Scissors | First | At centre | One end | Other end | |
| (ii) | Sugar tongs | Third | One end | At centre | Other end | |
| (iii) | Nutcracker | Second | One end | Other end | At centre | |
| (iv) | Pliers | First | At centre | One end | Other end | |
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संबंधित प्रश्न
The diagram below shows a lever in use:
- To which class of levers does it belong?
- Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
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%?
Give three examples for leavers of 1st order.
Give three examples for leavers of second order.
The following belong to which class of lever?
An oar of a boat
The following belong to which class of lever?
A fire tongs
The following belong to which class of lever?
A pair of scissors
When we want to use a machine as a force multiplier, which class of lever should we preferably use? Give a simple diagram of such a lever.
