ICSE Class 10 Physics 2018 Solved Paper

A half metre rod is pivoted at the centre with two weights of $20 {\gf}$ and $12 {\gf}$ suspended at a perpendicular distance of $6 {\cm}$ and $10 {\cm}$ from the pivot respectively as shown below.

Question : 41 of 78

Marks: +1, -0

Is the rod in equilibrium?

Solution:

Clockwise moment of force

\;=12 {\gf} × 10 {\cm}

\;=120 {\gf}- {\cm}

Anticlockwise moment of force

\;=20 {\gf} × 6 {\cm}

\;=120 {\gf}- {\cm}

since, the clockwise moment of force is equal to the anticlockwise moment of force, the rod is in equilibrium
Thus, Yes, the rod is in equilibrium.

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