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प्रश्न
How does a machine work?
उत्तर
A machine does some useful work when energy is supplied to it.
Energy supplied to machine (or input) = Effort × Displacement of the point of application of effort.
Work obtained from a machine (or output) = Load × Displacement of the point of application of load.
For an ideal machine, Work output = Work input.
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संबंधित प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
Give an example of the following uses of a machine:
to obtain gain in speed
Define Velocity Ratio
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
Give an example of the following use of a machine to obtain gain in force.
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Classify the following as a lever, a pulley and an inclined plane:
An opener
______ help us to make work easier.
The idea of a simple machine originated with the Greek philosopher Archimedes.
Simple machines makes work easier by trading ______ for force.
