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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
State four ways in which machines are useful to us.
Name a machine to change the point of application of force ?
Mechanical advantage (M.A.), load (L) and effort (E) are related as ______.
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.
Name a machine which is used to multiply speed ?
Give an example for each of the following uses of a machine:
to obtain gain in force,
Work is the application of a ....... through a distance.
Stat the principle of an ideal machine.
