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प्रश्न
Answer the following.
What is a machine?
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उत्तर
Tools and objects that help us to perform the same amount of work with much less effort than if we did the work manually, are called machines.
Example: lever, hammer, knife, etc.
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संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
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Give an example where a machine is used to obtain gain in speed.
Give an example of the following use of a machine to change the direction of force.
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(i) M.A.
(ii) V.R. and
(iii) Efficiency of the machine?
Classify the following as a lever, a pulley and an inclined plane:
Scissors
Classify the following as a lever, a pulley and an inclined plane:
A crane
______ help us to make work easier.
Rearrange the letters and find out the name of the tool.
R L E V E
| ______ | ______ | ______ | ______ |
