Question

...45 points...+ brainliest
any physics ,please answer it
The density of a linear rod of length L varies as
d=A+Bx where x is the distance from the left end.Locate the centre of mass.

Answer 1

see the above image.

Answer 2

Hello mate here is your answer.


total mass = density * length

that is

dm = lamda * dx

dm = (x+2)dx

integrating both sides,

we get,

m = x^2/2 + 2x

   = l^2/2 + 2l

put l = 3 meter.

m = 9/2 + 6 = 21/2 m that is approx. 10.5 m

Hope it helps you.