You are deSIghIhg a lab to determine the relationship between acceleration and net force using a modied Atwood Machine lab setup as shown below. You have slotted masses in a cart for M1 and on a mass hanger for M2. You need to change the independent variable for various trials and measure the acceleration in a calculation. Which procedural step will allow you to collect the data you need? Elimination Tool . Select one answer A Add mass to M1. B Add mass to M2. C Decrease the mass of M1 and M2. D Move mass from M1 to M2