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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
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.
A machine is 75% efficient’. What do you understand by this statement?
Give an example where a machine is used to obtain gain in speed.
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 change the point of application of the force.
Classify the following as a lever, a pulley and an inclined plane:
A wedge
What is a lever?
Simple machines usually exchange a larger force to move a heavy object.
