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प्रश्न
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
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उत्तर
The effort in the centre, the load on one side and the fulcrum on the other side make a lever of the third order.
संबंधित प्रश्न
Answer the following.
What is a machine?
Give a reason for the following.
Machines are able to make our work convenient.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
Give an example of the following uses of a machine:
to obtain gain in speed
Fig show a system of four pulleys. The upper two pulleys are fixed and the lower two are movable.
(i) Draw a string around the pulleys. Also show the place and direction in which the effort is applied.
(ii) What is the velocity ratio of the system?
(iii) What is the mechanical advantage of the system?
(iv) What assumption do you make in arriving at your answer in part (iii)?
Define Mechanical advantage
Classify the following as a lever, a pulley and an inclined plane:
An axe
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
The idea of a simple machine originated with the Greek philosopher Archimedes.
