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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
With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency of a machine, name and define the term that will not change for the machine of a given design.
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 multiply force ?
Mechanical advantage (M.A.), load (L) and effort (E) are related as ______.
State the incorrect statement:
A force of 5 kgf is required to cut a metal sheet. A pair of shears used for cutting the metal sheet has its blades 5 cm long, while its handles is 10 cm long. What effort is needed to cut the sheet?
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
Complete the following sentence :
A scissors is a ___________ multiplier.
Mention the advantages of using a machine.
