b) Work done by the centripetal force when a particle is moving in a circular path is 0. Justify the given statement
with proper mathematical explanation.
c) State the position of C.G for a: i) Triangular lamina ii) Hollow cone.
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PRT and QRS are similar triangles.
(See diagram - not drawn accurately).
( PA )
Which of these is equivalent to QR/PR ?
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