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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
An opener
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उत्तर
An opener – A lever
संबंधित प्रश्न
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
Can a machine be 100% efficient?
Give an example of the following uses of a machine:
to obtain gain in speed
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
Classify the following as a lever, a pulley and an inclined plane:
A crane
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Which machine will you use to do the following work? Write their type.
To cut vegetables.
What is meant by simple machines?
______ help us to make work easier.
