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प्रश्न
Name six simple machines. Give an example of each machine.
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उत्तर
Simple Machines and their examples are as follows:
- The lever: Examples are a crowbar, claw hammer, a pair of pliers, etc.
- The Inclined plane: Examples are ramp, staircase, hilly roads, etc.
- The wedge: Examples are knife, axe, plough, nail, etc.
- Screw: Examples are A screw.
- The wheel and axle: Examples are steering wheel of a car, bicycle pedal, etc.
- The pulley: Examples are a pulley used in raising a load.
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संबंधित प्रश्न
What is the principle on which a machine works?
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is an ideal machine?
Why is a machine not 100% efficient?
What is an inclined plane?
Can a machine be 100% efficient?
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:
A wedge
Which machine will you use to do the following work? Write their type.
To draw water from a well.
______ help us to make work easier.
