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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.
A machine performs work by itself.
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Write the relation between mechanical advantage, velocity ratio and efficiency.
Define Mechanical advantage
What is the efficiency of an ideal machine?
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Classify the following as a lever, a pulley and an inclined plane:
A wedge
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
Why is this so traveller’s bags have wheels?
