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The working of a common balance or a ...

The working of a common balance or a physical balance is based on the 'Principle of moments . A metre scale of uniform density is balanced at the centre . If a mass of 2 kg is suspended at an adge of the scale then what mass should be suspended on other side at `1//4` th length of the scale to maintain the horizontal position of the scale ?

Text Solution

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Least count `=(1M.S.D.)/(N)`
Zero correction =- zero error
=- [(Main scale coinciding division)
-(V.S. coinciding division)
(ii) +1.2 mm
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