Question

Find the weight of a metre scale balanced at 5 cm mark when a weight of 10gf is suspended at one of its ends

Answer 1

Answer:

final answer

Explanation:

The weight of the half metre rule be x gf and it acts at $25$ cm

Anticlockwise direction $=$ x × $4$

Clockwise direction = $20$ × $21$

Anticlockwise moment = Clockwise moment

$4x=20$ × $21$

 $x$ = $105$ gf

Therefore, weight of metre rule is $105$ gf.

And , one gf is force acting on the body of mass $1$ gm, thus mass of body is

$105$ gm.