A house painter stands 3.0 m above the ground on a
5.0-m-long ladder that leans against the wall at a point 4.7 m above the
ground. The painter
weighs 680 N and
the ladder weighs
120 N. Assuming no
friction between the
house and the upper
end of the ladder,
find the force of
friction that the
driveway exerts on
the bottom of the
ladder. (
✦
✦
2.4 m
1.2 m
FA
F
3.0 m
0.50 m
1200 N
1.80 m
CG
1.10 m
q
d
FL FR
0.8600 m
0.3333 m