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प्रश्न
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
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उत्तर
|
|
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| Wedge | Inclined plan | Lever |
|
|
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| Wheel and axle | Pulley | Screw |
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संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
Select the correct alternative:
For an ideal machine, the efficiency is
The correct relationship between the mechanical advantage (M.A.), the velocity ratio (V.R.) and the efficiency (n) is ______.
What is an ideal machine?
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.
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’.
Which machine will you use to do the following work? Write their type.
To draw water from a well.
Simple machines makes work easier by trading ______ for force.
A pair of scissors is a _____ multiplier.
