Advertisements
Advertisements
प्रश्न
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
Advertisements
उत्तर
To lift bricks to the top of a tall building, we should use a crane, which is a pulley.
संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
Answer the following.
What do you understand by a complex machine?
Give an example of the following uses of a machine:
to obtain gain in speed
Define Mechanical advantage
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
Why is this so machines have to be maintained?
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
Ravi and Savita sit on a seesaw in a garden. In the meantime, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
Name a machine for each of the following uses:
- to multiply the force,
- to change the point of application of force,
- to change the direction of force,
- to obtain the gain in speed.
