Question

A souvenir is constructed by 3 light
rods, light strings and four objects
as shown. If the system is in
equilibrium, mass of particle mzis
OX
W
3cm
4cm
2cml4cm
3cm 4cm m
12
12gm
mu​

Answer 1

Answer:

Soil minerals form the basis of soil. They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.

Explanation:

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Answer 2

Correct question:

A souvenir is constructed of 3 light rods, light strings and four objects. If the system is in equilibrium, the mass of the particle $m_3$ is?

The mass of the particle $m_3$ is 84gm.

Given:

3 light rods, light strings and four objects.

To Find:

Mass of the particle $m_3$.

Solution:

Here, it is given that the system is in equilibrium.

so, by applying the torque to point A, that is $[T=F\times R]$.

now, after putting the given values in the above equation.

we get,

$12\times 10\times 3=m_1\times 10\times 4\\m_1=9gm$

now, we will apply the torque equation in B.

we get,

$m_2g\times 2=21\times 4\times g\\m_2=42gm$

again, we will apply the torque equation in C.

we get,

$(42+21)gm\times g\times 4=m_3\times g\times 3$

now,

$m_3=\frac{6.3\times 4}{3}\\m_3=84gm.$

Hence, the mass of the particle $m_3$ is 84gm.

                   

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