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प्रश्न
Answer the following.
What do you understand by a complex machine?
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उत्तर
Machines such as sewing machines or cars that have more than one moving part are called complex machines.
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संबंधित प्रश्न
What do you understand by a simple machine?
Why is a machine not 100% efficient?
Can a machine be 100% efficient?
Define Velocity Ratio
Define Efficiency
Give an example where a machine is used to obtain gain in speed.
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.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
Give an example of the following use of a machine to obtain gain in force.
The idea of a simple machine originated with the Greek philosopher Archimedes.
