Is figure 4-3 a useful model of an atom?

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

i guess it’s a and b

f=ma newton

f=100x2.5=250n

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this