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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.
A machine performs work by itself.
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is an ideal machine?
Answer the following.
What is a machine?
Answer the following in short.
Mention any two methods by which we can take care of machines.
What do you understand by a simple machine?
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.
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Why is this so machines have to be maintained?
