Question

Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm and 400 g at x = 70 cm. The distance of the centre of mass from the origin is(a) 40 cm(b) 45 cm(c) 50 cm(d) 30 cm

Answer 1

a) 40

lemme know if I am wrong or u don't understand anything