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प्रश्न
What is the principle on which a machine works?
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उत्तर
Principle of a Machine: The work output of a machine is equal to the work input.
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संबंधित प्रश्न
Answer the following.
What do you understand by a complex machine?
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
Define Simple machine
Define Efficiency
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
Write an expression for the mechanical advantage of an inclined plane.
(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
Which machine will you use to do the following work? Write their type.
To draw water from a well.
Simple machines usually exchange a larger force to move a heavy object.
