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प्रश्न
The diagram below shows a pulley arrangement :
(i) Copy the diagram and mark the direction of tension on each strand of the string.
(ii) What is the velocity ratio of the arrangement ?
(iii) If the tension acting on the string is T, then what is the relationship between T and effort E ?
(iv) If the free end of the string moves through distance x, find the distance by which the load is raised.
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उत्तर
(i)
(ii) The load rises to `x/2`
∴ velocity ratio is 2
(iii) `T/2 = E`
(iv) `x/2`
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संबंधित प्रश्न
Answer the following in detail.
How does a pulley make work simpler?
Explain the working of a gear system.
Define the following term in reference to a gear system of Driving gear ?
What is a block and tackle system of pulleys?
Give reason for the following:
In case of a block and tackle system, the mechanical advantage increases with the increase in the number of pulleys.
Write two uses of pulleys. Is pulley a force multiplier?
What is a block and tackle system of pulleys?
A block and tackle system of pulleys has a velocity ratio of 4.
- Draw a labelled diagram of the system indicating clearly the points of application and directions of load and effort.
- What is the value of the mechanical advantage of the given pulley system if it is an ideal pulley system?
A man raises a load of 360 kgf using a block and tackle system of 3 pulleys. If the efficiency of the pulley system is 60%, what effort is applied by the man?
A pulley is a machine made up of a ______.
