4. A uniform metre scale is balanced at 35 cm mark when
weights of 50 gf and 20 gf are suspended at 5 cm mark and
80 cm mark respectively. Calculate the weight of the metre scale
Answers
Answered by
4
Answer:
A metre scale is uniform, therefore its weight acts at 50 cm mark.
Taking moments about to cm mark.
Moment in clockwise direction,
= W x 10 cm + 5 gf x 35 cm
= 10 W cm + 175 cm gf cm.
Moment in anti-clockwise direction, = 20gf x 35 cm = 700 gf cm.
By the law of moments,
Moments in clockwise direction = Moments in anti-clockwise direction.
10 W cm + 175 gf cm = 700 gf cm
∴ 10 W cm = (700 - 175) gf cm
∴ W = 525/10 gf = 52.5 gf.
Explanation:
Answered by
1
Answer:
50
Explanation:
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