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प्रश्न
Answer the following in short.
Explain the various functions that a machine can perform.
थोडक्यात उत्तर
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उत्तर
Various functions that a machine can perform are :
- Changing the direction of applied force − Example: When a flag is hoisted with the help of a pulley.
- Changing the magnitude of applied force − Example: Bottle opener multiplies the applied force and much less effort is required to open the cap.
- Applying force at a convenient point − Example: hi a pair of scissors, the input force is applied at the handle of the scissors which cuts the paper at the other end of the blade.
- Changing the speed of an object − Example: While riding a bicycle, force is applied on pedals which multiplies the speed.
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संबंधित प्रश्न
A pulley system has three pulleys. A load of 120 N is overcome by applying an effort of 50N. Calculate the Mechanical Advantage and Efficiency of this system.
Fill in the blank:
A pulley is used to change ........................
Select the correct alternative:
A pulley is used because of it
What is the justification for using the pulley then ?
Explain how a gear system can be used to obtain Change in direction of rotation. Given one example.
In which direction will the force be applied when a single pulley is used with a mechanical advantage greater than unity?
In a single fixed pulley, If the effort moves by a distance y downwards, by what height is the load raised?
Name a machine which is used to:
change the direction of force applied.
What is a block and tackle system of pulleys?
State one advantage of single movable pulley.
