1.

Handlein a door is always placedat the edgeof door . Why ?

Answer»

Solution :The DOOR can be easily OPENED or closed if we apply the forceat a POINT far away from the fixed ADGE .
(i) In this case , the effect of the force we apply is to rotatethe door about the fixed adge .
(ii) This rotational effect of the appliedforceis more about the 'axis of rotation ' when the distancebetween the fixed edge and the point of application of force is more .


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