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प्रश्न
What is an ideal machine?
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
Answer the following.
What is a machine?
show a nut cracker In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E .
What is the efficiency of a machine?
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
A uniform metre scale is kept in equilibrium when supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. State with reasons, whether the weight of the scale is greater than, less than or equal to the weight of mass M.
Classify the following as a lever, a pulley and an inclined plane:
A slide
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 cut vegetables.
Why is this so machines have to be maintained?
Simple machines makes work easier by trading ______ for force.
