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What is the center of mass (in cm) of a triangular lamina from the vertex of the triangular lamina if its height is 20\; cm ?

Option: 1 667

Option: 2 13.33

Option: 3 6.67

Option: 4 8

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 As from the concept we have learned that the center of mass of the triangular plate have their center of mass at a distance of \frac{H}{3} from the base of the triangular plate. So from the vertex of the triangular plate it is -

                \Rightarrow H-\frac{H}{S}=\frac{2H}{3}

So, putting the value H=20\; cm

From there we get, Center of mass the triangular lamina =\; 13.33 \; cm from the vertex.

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