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प्रश्न
Give an example for each of the following uses of a machine:
to obtain gain in force,
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उत्तर
A jack is used to multiply force.
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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.
Name a machine to change the point of application of force ?
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
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.
Under what condition will a set of gears produce a gain in speed
What is a machine?
Mention the advantages of using a machine.
