A uniform meter scale of mass `1kg` is placed on table such that a part of the scale is beyond the edge. If a body of mass `0.25kg` is hung at the end of the scale then the minimum length of scale that should lie on the table so that it does not tilt is

Options

A. 90 cm
B. 80 cm
C. 70 cm
D. 60 cm

Answer

D

Explanation

If the distance from one end is x then `(50 - x) 1 = x (0.25) = x/4`
` 200 - 4x = x rArr x = 40 cm `
` :. ` length on the table = 100 - 40 = 60 cm