21. [-/10 Points] DETAILS SERPSE10 5.8.OP.036.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Two blocks connected by a rope of negligible mass are being dragged by a horizontal force (see figure below). Suppose F = 70.0 N, m, = 11 kg, my = 23.0 kg, and the coefficient of kinetic friction between each block and the surface is 0.099. (a) Draw a free-body diagram for each block. (b) Determine the acceleration of the system. (c) Determine the tension 7 in the rope. Click here to begin! Need Help? Read It 22. [-/10 Points] DETAILS SERPSE10 5.A.P.041. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley (see figure below), Nick pulls on the loose end of the rope with such a force that the spring scale reads 330 N. Nick's true weight is 220 N, and the chair weighs 160 N. Nick's feet are not touching the ground. (a) Draw one pair of diagrams showing the forces for Nick and the chair considered as separate systems and another diagram for and the chair considered as one system. (Submit a file with a maximum size of 1 MB.) This answer has not been graded yet. (b) Show that the acceleration of the system is upward. (Submit a file with a maximum size of 1 MB.) This answer has not been graded yet. Find its magnitude (in m/s ). m/s2 (c) Find the force (in N) Nick exerts on the chair. N Need Help? Read It