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प्रश्न
Name a machine to multiply force ?
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उत्तर १
To multiply force: a jack is used to lift a car.
उत्तर २
Multiply force: a movable pulley.
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.
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.
Name a machine which is used to multiply speed ?
What is the purpose of a machine?
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
Complete the following sentence :
A scissors is a ___________ multiplier.
Under what condition will a set of gears produce a gain in speed
