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प्रश्न
Which machine will you use to do the following work? Write their type.
To cut vegetables.
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उत्तर
To cut vegetables, we should use a knife.
Type: Wedge (simple machine)
संबंधित प्रश्न
State whether the following statement is True or False.
In an ideal machine, work done on load is equal to the work done by effort.
Can a machine have an efficiency of 100%? Give a reason to support your answer.
A machine is 75% efficient’. What do you understand by this statement?
Answer the following.
What do you understand by a complex machine?
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Classify the following as a lever, a pulley and an inclined plane:
Scissors
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
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.
