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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
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
What is an ideal machine?
A machine is 75% efficient’. What do you understand by this statement?
Give a reason for the following.
Machines are able to make our work convenient.
Why is a machine not 100% efficient?
The correct relationship between the mechanical advantage (M.A.), the velocity ratio (V.R.) and the efficiency (n) is ______.
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
Write an expression for the mechanical advantage of an inclined plane.
A simple machine enables us to lift a load of 10,000 N by the application of an effort of 500 N. However, when the point of application of the effort moves through 2.5 m, the load gets raised through 10 cm only. What are the values of the:
(i) M.A.
(ii) V.R. and
(iii) Efficiency of the machine?
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
