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The centre of gravity of a uniform triangular lamina lies at:
A rigid body is said to be in mechanical equilibrium when:
The centre of gravity of a uniform circular ring lies:
A uniform metre rule is balanced horizontally on a knife-edge at its 50 cm mark. When a 20 g mass is suspended from its 10 cm mark, the rule can be balanced again by suspending an unknown mass m at its 70 cm mark. The value of m is:
The centre of gravity of a uniform solid right circular cone of vertical height h lies on its axis at a distance of:
Case study: A uniform metre rule of mass 100 g is pivoted at its 40 cm mark. A 200 g mass is suspended at its 20 cm mark. To balance the rule horizontally, an unknown mass m is suspended at its 90 cm mark. (The weight of the rule acts at its 50 cm mark.) The value of m is:
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