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प्रश्न
State four ways in which machines are useful to us.
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उत्तर
Machines are useful to us in the following ways:
- In lifting a heavy load by applying less effort.
- In changing the point of application of effort to a convenient point.
- In changing the direction of effort in a convenient direction.
- For obtaining a gain in speed.
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संबंधित प्रश्न
What is the principle of an ideal machine?
Two forces each of 5N act vertically upwards and downwards respectively on the two ends of a uniform metre rule which is placed at its mid-point as shown in the diagram. Determine the magnitude of the resultant moment of these forces about the midpoint.
Draw a diagram to show how a single pulley can be used so as to have its ideal M.A= 2.
Name a machine to multiply force ?
Name a machine to change the point of application of force ?
The diagram below shows a claw hammer used to remove a nail :
(i) To which class of lever does it belong ?
(ii) Give one more example of the same class of lever mentioned by you in (i) for which the mechanical advantage is greater than one.
What is the purpose of a machine?
Stat the principle of an ideal machine.
What is a machine?
Mention the advantages of using a machine.
