Question

A 53-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity does not lie halfway between the two ends. The system is balanced by a support that is 0.30 m from the left end of the plank. How far to the right of the support is the plank’s center of gravity?

I did (53)(0.30) + (21)(0.30) / 53+21

Is this correct?

Answer 1

53•0,3=21•x
x=53•0,3/21=0.757 m

Answer 2

thank you, now I understand what I did wrong.