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प्रश्न
Give a reason for the following.
Machines are able to make our work convenient.
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उत्तर
Machines help us to perform the same amount of work with much less effort than if we did the work manually. They also make our work faster and easier by multiplying the speed or the force applied.
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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.
Select the correct alternative:
For an ideal machine, the efficiency is
Name six simple machines. Give an example of each machine.
What care would you take to increase the life span of a machine which you use?
Answer the following in short.
Mention any two methods by which we can take care of machines.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
Why is this so machines have to be maintained?
Simple machines usually exchange a larger force to move a heavy object.
The idea of a simple machine originated with the Greek philosopher Archimedes.
