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Question
What is the common simple machine present in all these three complex machines?
What is the common simple machine present in all these three complex machines?
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Solution
The correct option is B Wheel and axle
- Here, we are provided with three complex machines: A bicycle, a sewing machine and a typewriter.
- We are to find the common simple machine present in all these three complex machines.
- There are three common simple machines found on a bicycle: lever (brake lever and tire lever), pulley (sprockets), and wheel-and-axle. Wheel-and-axle is the most obvious. The bicycle contains wheels and axles in the front and rear wheels.
- A sewing machine basically consists of a wedge (sewing needle) and wheel-and-axle (which facilitates the motion of the sewing needle upon the application of force on the leg-pedal of the sewing machine).
- A typewriter basically has a lever (keys/carriage return/carrier release), inclined plane (paper feed) and wheel-and-axle. The ink ribbon of a typewriter is wound around two spools (type of wheel), which are attached to a shaft/axle that rotates.
- Clearly, the common simple machine present in all the given complex machines is wheel-and-axle.
- Here, we are provided with three complex machines: A bicycle, a sewing machine and a typewriter.
- We are to find the common simple machine present in all these three complex machines.
- There are three common simple machines found on a bicycle: lever (brake lever and tire lever), pulley (sprockets), and wheel-and-axle. Wheel-and-axle is the most obvious. The bicycle contains wheels and axles in the front and rear wheels.
- A sewing machine basically consists of a wedge (sewing needle) and wheel-and-axle (which facilitates the motion of the sewing needle upon the application of force on the leg-pedal of the sewing machine).
- A typewriter basically has a lever (keys/carriage return/carrier release), inclined plane (paper feed) and wheel-and-axle. The ink ribbon of a typewriter is wound around two spools (type of wheel), which are attached to a shaft/axle that rotates.
- Clearly, the common simple machine present in all the given complex machines is wheel-and-axle.
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