Boxes of various masses are on a friction-free, level table. From greatest to least, rank the a. net forces on the boxes. b. accelerations of the boxes.

Problem 1R Boxes of various masses are on a friction-free, level table. From greatest to least, rank the a. net forces on the boxes. b. accelerations of the boxes. Solution 1R Step1 : Net forces of the boxes and acceleration is obtained as follows We know F= ma To find acceleration F = m × a a = F m Case 1 Mass = 5 kg Net force = 5N-10N = -5N To find acceleration a = m Substituting the values we get a = 5N = 1 N/kg 5 kg Case 2 Mass = 10 kg Net force = 10N-15N = -5N F To find acceleration a = m Substituting the values we get a = 10 kg= 0.5 N/kg Case 3 Mass = 5 kg Net force = 10N-15N = 5N To find acceleration a = F m Substituting the values we get a = 5 kg = 1 N/kg Case 4 Mass = 20 kg Net force = 5N-15N = -10N F To find acceleration a = m Substituting the values we get 10N a = 20 kg = 0.5 N/kg