10 . Measure the distance from the table to the top of the cardboard square . Put in the chart for . 11 . Place a total mass of 200 g on the cardboard square , compressing the spring 1' Measure the distance from the table top to the cardboard square . Calculate the compression distance of the spring by and place this value in the chart . See chart above for calculations G. Repeat this procedure for a total mass of 400 g, 600 g, and 800 g. HINT :When you stack the masses alternate the location of the slots so that the masses don't become lopsided and make the cart fall over . See above chart H. Calculate the force of the spring and record the results in the chart