A uniform metal plate shaped like a triangle ABC has a mass of 540 gm. the length of the sides AB, BC and CA are 3 cm, 5 cm and 4 cm, respectively. The plate is pivoted freely about the point A . What mass must be added to a vertex , so that the plate can hang with the long edge horizontal ?

Question

A uniform metal plate shaped like a triangle ABC has a mass of  540 gm. the length of the sides AB, BC and CA are 3 cm, 5 cm and 4 cm, respectively. The plate is pivoted  freely about the point A . What mass must be added to a vertex , so that the plate can hang with the long edge  horizontal ?

Examsnet · Accepted Answer

Correct Answer is :  140 gm at C

KVPY SA Exam 2016 Question Paper