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प्रश्न
Name some simple machines.
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उत्तर
Simple machines are pulley, wedge, inclined plane, screw, lever, wheel, and axle.
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संबंधित प्रश्न
Select the correct alternative:
For an ideal machine, the efficiency is
Give a reason for the following.
Machines are able to make our work convenient.
What is an ideal machine?
Give an example of the following uses of a machine:
to obtain gain in speed
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
Define Mechanical advantage
Write an expression for the mechanical advantage of an inclined plane.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
The idea of a simple machine originated with the Greek philosopher Archimedes.
