Please help! Just part B! Thanks!
let the left end be at a distance x=d from the shore
then right end will be at x=d+4
and the center of the boat will be at x=d+2
now bob is at x=d+4
hence center of mass=[90*(d+4)+110*(d+2)]/(90+110)=(200*d+580)/200
as there is no external force on the system, the center of mass is
not changed.
hence (200*d+580)/200=11.1
d=8.2 m
hene the left end of the boat is at a distance of 8.2 m from the shore.
Please help! Just part B! Thanks! Bob, whose mass is 90 kg, is out in a...