When a mass of 50g is hung from 5cm mark of a uniform metre rule. The rule is found to balance on a fulcrum placed at the 35cm mark. Calculate the mass of the metre rule.

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27-10-2022
Physics

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When a mass of 50g is hung from 5cm mark of a uniform metre rule. The rule is found to balance on a fulcrum placed at the 35cm mark. Calculate the mass of the metre rule.

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smecloudbird18 smecloudbird18 · Answer 1 · 2022-10-31T10:38:12-04:00

The mass of the meter rule is 25g.

Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI fundamental mass unit.

We are given that,

m₁ = 50g

d₁ = 5cm

d₂ = 35cm

m₁ = ?

Therefore, for the value of mass of meter rule can be calculated by the formula i.e. known (law of moment) which is given below,

clockwise moment = anti - clockwise moment

m₁ × d₁ = m₂ × d₂

m₂ = (m₁ × d₁)/ d₂

m₂ = (50g × 5cm)/35cm

m₂ = 7.14g

Thus, the mass of the meter rule would be 7.14g

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