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MHT CET202124 Sep 2021Morning ShiftPhysicsRotational MotionActual

A metre scale is supported on a wedge at its centre of gravity. A body of weight ' w ' is suspended from the 20 ~cm mark and another weight of 25 gram is suspended from 74 ~cm mark balance it and the metre scale remains perfectly horizontal. Neglecting the weight of the metre scale, the weight of the body is

Options

  1. A20 gram-wt
  2. B15 gram-wt
  3. C33 gram-wt
  4. D30 gram-wt

Correct answer

A. 20 gram-wt

Step-by-step solution

Taking moments about the centre of the scale we get aligned & W 30=25 24 & W = 25 24 30 =20 ~g - wt aligned

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