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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
An axe
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उत्तर
An axe – A wedge
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.
State if the following statement is true or false. Correct the statement if it is false.
There are four types of simple machines.
Answer the following in short.
Mention any two methods by which we can take care of machines.
What is an inclined plane?
What is the efficiency of an ideal machine?
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
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’.
What is a lever?
