Advertisements
Advertisements
प्रश्न
Complete the table.
| S. No | Types of Simple Machine | Example |
| 1. | Pulley | |
| 2. | Wheel and axle | |
| 3. | Wedge | |
| 4. | Inclined plan | |
| 5. | Lever | |
| 6. | Screw |
Advertisements
उत्तर
| S. No | Types of Simple Machine | Example |
| 1. | Pulley | crane |
| 2. | Wheel and axle | bicycle, grinder |
| 3. | Wedge | knife, scissors, axe |
| 4. | Inclined plan | ramp, slide, and slope for wheel chair |
| 5. | Lever | see saw, nut cracker, and plier |
| 6. | Screw | pencil sharpener, screw- jack, bottle cap, windmill |
APPEARS IN
संबंधित प्रश्न
Define the following term in reference to a gear system for Gain in torque ?
Give reason for the following:
In a single fixed pulley, the velocity ratio is always more than the mechanical advantage.
Give reason for the following:
In case of a block and tackle arrangement, the mechanical advantage increases with the increase in the number of pulleys.
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.
What is a block and tackle system of pulleys?
There is no gain in mechanical advantage in the case of a single fixed pulley. Explain, why the pulley is then used?
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 system has a velocity ratio of 4 and an efficiency of 90%. Calculate:
(i) the mechanical advantage of the system.
(ii) the effort required to raise a load of 300 N by the system.
