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प्रश्न
What is meant by simple machines?
उत्तर
Simple machines are tools that help people work faster and better. These help us lift heavy loads and change the speed of the motion or the direction of the force. Examples of simple machines are knife, nutcrackers, etc.
संबंधित प्रश्न
What do you understand by a machine?
What do you understand by a simple machine?
Why is a machine not 100% efficient?
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
Can a machine be 100% efficient?
Classify the following as a lever, a pulley and an inclined plane:
A needle
Classify the following as a lever, a pulley and an inclined plane:
An axe
Simple machines usually exchange a larger force to move a heavy object.
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.
