- #1
Lyphta
- 11
- 0
Homework Statement
While standing on a long board resting on a scaffold, a 70 kg painter paints the side of a house. If the mass of the board is 15 kg, how close to end can the painter stand without tipping the board over?
http://img146.imageshack.us/my.php?image=physicssl9.jpg
Homework Equations
[tex]\tau[/tex]painter = [tex]\tau[/tex]board
The Attempt at a Solution
[tex]\tau[/tex]painter = [tex]\tau[/tex]board
(rpainter) (70kg) = (1.5 m) (15kg)
70r = 22.5
r=.32 ft.
the answer was 1.2 m from left end of board.