Advertisements
Advertisements
प्रश्न
Differentiate between a single fixed pulley and a single movable pulley.
उत्तर
Single fixed pulley | Single movable pulley |
1. It is fixed to a rigid support. | 1. It is not fixed to a rigid support |
2. Its mechanical advantage is one . | 2. Its mechanical advantage is two. |
3. Its velocity ratio is one. | 3. Its velocity ratio is two. |
4. The weight of pulley itself does not affect its mechanical advantage. | 4. The weight of pulley itself reduces its mechanical advantage. |
5. It is used to change the direction of effort | 5. It is used as force multiplie |
APPEARS IN
संबंधित प्रश्न
A block and tackle system has V.R. = 5.
Draw a neat labeled diagram of a system indicating the direction of its load and effort
Select the correct alternative:
A pulley is used because of it
What is a gear system ?
Define the following term in reference to a gear system for Gear ratio ?
Define the following term in reference to a gear system for Gain in speed ?
Name the type of single pulley that can act as a force multiplier. Draw a labelled diagram of the pulley mentioned by you.
Give two reasons why the efficiency of a single movable pulley system is not 100%.
A type of single pulley is very often used as a machine even though it does not give any gain in mechanical advantage. Name the type of pulley used.
The pulley system shown in the figure is to be used to lift a load W. If the man applying the effort cannot apply a force exceeding 1000 N, what is the maximum load that can be lifted?
The actual load that the man is finally able to lift turns out to be 2700 N. What are the values of the actual M.A., obtained, and the efficiency of the actual set-up?
A pulley is a machine made up of a ______.