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प्रश्न
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
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उत्तर
The fulcrum in the centre, the load on one side and the effort on the other side make a lever of the first order.
संबंधित प्रश्न
What is the principle on which a machine works?
A machine is 75% efficient’. What do you understand by this statement?
Answer the following in short.
Mention any two methods by which we can take care of machines.
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Give an example of the following use of a machine to change the point of application of the force.
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?

What is a lever?
Why is this so traveller’s bags have wheels?
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
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