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प्रश्न
What is the purpose of a machine?
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उत्तर
The purpose of a machine is:
(i) To multiply force
(ii) To obtain a gain or decrease in speed
(iii) To change to direction of application of force in a convenient direction
APPEARS IN
संबंधित प्रश्न
A scissor is a _________ multiplier
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 change the point of application of force ?
Mechanical advantage (M.A.), load (L) and effort (E) are related as ______.
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
Give an example for each of the following uses of a machine:
to obtain gain in force,
Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
Under what condition will a set of gears produce a gain in speed
Mention the advantages of using a machine.
