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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 is a machine?
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
What is the purpose of a jack in lifting a car by it?
Why is a machine not 100% efficient?
What is an inclined plane?
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
Fig. shows a spade. It is being used to lift soil weighing 30N from the ground.
(a) Mark the direction of the least force on the handle necessary to keep the spade balanced.
(b) Calculate the least force on the handle necessary to keep the spade balanced (the weight of the spade is negligible).
(c) If the left hand was move towards the soil on the spade, would the force on the handle necessary to keep the soil balance the greater or less? Give a reason for your answer.
(d) To which class of lever does the spade belong?
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
What is meant by simple machines?
What is a lever?
