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प्रश्न
What is an ideal machine?
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उत्तर
A machine in which no part of the work done on the machine is wasted is called an ideal or perfect machine. Thus, for an ideal machine, the work output is equal to the work input, i.e., the efficiency of an ideal machine is 1 (or 100 percent).
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संबंधित प्रश्न
State whether the following statement is True or False.
In an ideal machine, work done on load is equal to the work done by effort.
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
What is an ideal machine?
How does a machine work?
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Why is this so traveller’s bags have wheels?
Name some simple machines.
