Part A Block A in the figure weighs 1.80 N and block B weighs 4 40 N. The coefficient of kinetic friction between all surfaces is 0.400. Find the magnitude of the horizontal force IF necessary to drag block B to the left at a constant speed of 6.00 cm/s if A rests on B and moves with it as shown in (Figure 1). Express your answer in newtons. VO ? FE Z 4 Submit Request Answer Part B Find the magnitude of the horizontal force IF necessary to drag block B to the left at a constant speed of 6.00 cm/s if A is held at rest by a string as shown in (Figure 2). Express your answer in newtons. F = Z Submit Request Answer Part C In Part A, what is the friction force on block A? Express your answer in newtons. IVO AEd Z Submit Request Answer Provide Feedback