Acharge q is placed at the centre of line joining 2 equal charges q .for a system to be in equilibriuma. q=qb. q= +q÷4c. q= -q÷4d. q=+ q÷2

i think the answer would d

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.