Question

Three particles each of mass 2.5 Kg are located at the corners of a right angled triangle whose
sides are 2m and 1.5 m long as shown in the figure. The CM is located at [ ]
a) (2.6, 3.7)
b) (0.5, 1.5)
c) (1.33, 0.5)
d) (0.5, 0.5)

Answer 1

Answer:

(-1.4,1.6)

Explanation:

Correct Option: [b]

Explanation: x coordinate of C.M. = m1x1 + m2x2 = (0.8 x 1) + (1.2 x -3) = -1.4

m1 + m2 0.8 + 1.2  

y coordinate of C.M. = m1y1 + m2y2 = (0.8 x -2) + (1.2 x 4) = 1.6 /  m1 + m2 0.8 + 1.2