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प्रश्न
The mechanical advantage of an ideal single movable pulley is ______.
विकल्प
1
2
less than 2
less than 1
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उत्तर
The mechanical advantage of an ideal single movable pulley is 2.
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संबंधित प्रश्न
A boy uses a single fixed pulley to lift a load of 50 kgf to some height. Another boy uses a single movable pulley to lift the same load to the same height. Compare the effort applied by them. Give a reason to support your answer.
State two functions of a machine.
State if the following statement is true or false. Correct the statement if it is false.
A single movable pulley is a pulley that has its axis of rotation fixed.
Answer the following in short.
Explain the various functions that a machine can perform.
Name a machine to change the direction of force ?
What is a gear system ?
Define the following term in reference to a gear system for Driven gear ?
Define the following term in reference to a gear system for Gear ratio ?
Draw a diagram of a combination of three movable pulleys and one fixed pulley to lift up a load. In the diagram, show the directions of load, effort and tension in each strand. Find:
- mechanical advantage,
- Velocity ratio and
- efficiency of the combination in ideal situation.
What is a block and tackle system of pulleys?
