Mechanics > Statics > Resolution of Forces
DCS# 1J30.25
COMPONENTS OF FORCE
APPARATUS
29 lb. weight
202-04-E
rope
202-04-E
hook
202-04-E
DESCRIPTION
Eight students, at opposite ends of lecture room, holding rope at shoulder height, are needed to lift weight off table
2G sin
θ
= W
G = W/(2 sin
θ)
G may be made arbitrarily large by making
θ
arbitrarily small.
NOTES
One variation is to have two strong people try to stretch out rope horizontally while a small person pushes the middle to the floor.
Eight
students, at opposite ends of lecture room, holding rope at shoulder
height,
are needed to lift weight off table