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प्रश्न
What is the principle on which a machine works?
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उत्तर
Principle of a Machine: The work output of a machine is equal to the work input.
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संबंधित प्रश्न
When is work said to be done by a force?
Define the term ‘work input’ and ‘work output’ in relation to a machine.
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Give an example where a machine is used to obtain gain in speed.
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
Simple machines usually exchange a larger force to move a heavy object.
