- #1
lollypop
- 33
- 0
hey everybody:
here is my problem
A uniform, aluminum beam 9.00 m long, weighting 300 N,
rests symmetrically on two supports 5.00 m apart. A boy
weighing 600 N starts at point A and walks toward the right.
How far beyond point B can the boy walk before the beam tips?
it will be like this right?
my questions is what am i going to use as a point of
reference,do i use B? how cna i calculate the distances?
I always get confused when plugging in distance for
the formula
D_cm = (m1x1+m2x2+..) / (m1+m2+..)
here is my problem
A uniform, aluminum beam 9.00 m long, weighting 300 N,
rests symmetrically on two supports 5.00 m apart. A boy
weighing 600 N starts at point A and walks toward the right.
How far beyond point B can the boy walk before the beam tips?
it will be like this right?
Code:
boy
|-----*----------*-----|
A B
reference,do i use B? how cna i calculate the distances?
I always get confused when plugging in distance for
the formula
D_cm = (m1x1+m2x2+..) / (m1+m2+..)