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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
Answer the following.
What do you understand by a complex machine?
Answer the following in short.
Mention any two methods by which we can take care of machines.
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.
Define mechanical advantage (M.A.) of the machine.
Give an example of the following use of a machine to change the point of application of the force.
Give an example of the following use of a machine to obtain gain in force.
What is the efficiency of a machine?
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
Classify the following as a lever, a pulley and an inclined plane:
An axe
Why is this so traveller’s bags have wheels?
