There's a calculation im really stuck on...and im not sure if im doing it properly: im working out the percentage difference of netforce and (m1+m2+)a so for my net force i have a value of 1.96, and for the (m1+m2)a i have a value of 0.3527 . Im not sure how to work out the percentage difference. So far ive gotten: 1.96 - 0.352 = 1.608 =1.608 / 1.96 = .8204 * 100 but i dont think this is right?