Now assume that tweedledum applies an upward force at the far left end of the board (fleft) and that tweedledee applies an upward force at the far right end of the board (fright). with what force does each person lift? recall that the weight of the board is w.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

reserve is the answer