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प्रश्न
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
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उत्तर
The useful work done by an actual machine is always less than the work done on the machine.
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संबंधित प्रश्न
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is the purpose of a jack in lifting a car by it?
Give two examples of inclined plane where it is used to raise a heavy load with less effort ?
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
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:
A knife
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
Rearrange the letters and find out the name of the tool.
R L E V E
| ______ | ______ | ______ | ______ |
The idea of a simple machine originated with the Greek philosopher Archimedes.
