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प्रश्न
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
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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 boy does work while pushing a wall.
State whether the following statement is True or False.
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Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is the purpose of a jack in lifting a car by it?
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
What is an ideal machine?
Rearrange the letters and find out the name of the tool.
R L E V E
| ______ | ______ | ______ | ______ |
Simple machines makes work easier by trading ______ for force.
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.
