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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
A needle
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उत्तर
A needle – An inclined plane
संबंधित प्रश्न
What is the principle on which a machine works?
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.
What is an inclined plane?
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
Define mechanical advantage (M.A.) of the machine.
Give an example of the following use of a machine to change the point of application of the force.
A simple machine enables us to lift a load of 10,000 N by the application of an effort of 500 N. However, when the point of application of the effort moves through 2.5 m, the load gets raised through 10 cm only. What are the values of the:
(i) M.A.
(ii) V.R. and
(iii) Efficiency of the machine?
What is meant by simple machines?
Simple machines usually exchange a larger force to move a heavy object.
A pair of scissors is a _____ multiplier.
