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प्रश्न
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
Ravi and Savita sit on a seesaw in a garden. In the meantime, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.
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उत्तर
Levers mentioned in the passage are:
- Sea-saw: It is a first-order lever.
- Wheelbarrow: It is a second-order lever.
- Lemon squeezer: It is a third-order lever.
- Tongs: It is a fourth-order lever.
संबंधित प्रश्न
What do you understand by a machine?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
Can a machine be 100% efficient?
Give an example of the following uses of a machine:
to obtain gain in speed
Define Velocity Ratio
Define mechanical advantage (M.A.) of the machine.
Which machine will you use to do the following work? Write their type.
To cut vegetables.
Simple machines usually exchange a larger force to move a heavy object.
