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प्रश्न
Answer the following.
What is a machine?
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उत्तर
Tools and objects that help us to perform the same amount of work with much less effort than if we did the work manually, are called machines.
Example: lever, hammer, knife, etc.
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संबंधित प्रश्न
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is an ideal machine?
Give a reason for the following.
Machines are able to make our work convenient.
What do you understand by a simple machine?
What is the purpose of a jack in lifting a car by it?
Why is a machine not 100% efficient?
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
Define Simple machine
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
Simple machines makes work easier by trading ______ for force.
