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प्रश्न
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
उत्तर
The useful work done by an actual machine is always less than the work done on the machine.
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संबंधित प्रश्न
Name six simple machines. Give an example of each machine.
Can a machine have an efficiency of 100%? Give a reason to support your answer.
Answer the following.
What do you understand by a complex machine?
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
What is an ideal machine?
How does a machine work?
A cook used a ‘fire tong pair’ of length 32 cm. to lift a piece of burning coal of mass 500 g. If he applies his effort at a distance of 8 cm from the fulcrum, what is his effort? Assume friction etc. to be absent. Also, obtain values of the M.A. and the V.R. of this ‘machine’.
Classify the following as a lever, a pulley and an inclined plane:
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Classify the following as a lever, a pulley and an inclined plane:
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What is meant by simple machines?
