1. (4 pt) A construction worker gives a brick a push so that it slides up on a wood ramp. The brick stops short of the top of the ramp and slides back down. The worker is puzzled that it took a longer time for the brick to slide down than the time for sliding up. Can you help the worked understand this difference in the sliding times? 2. (3 pt) A person in the Leaning Tower of Pisa is trying to measure her weight using an electronic scale. Upon stepping on the scale she remembers that the oors are not horizontal, but severely inclined. How should she interpret the reading of the scale? 3. (2 pt) Giancoli, Mis-Conceptual Question 4.4. Simulation and Computational Problems These problems require running of simulations (e.g., in Java Script) on your computer. The goal of these problems is the integration of physical concepts with computational tools. Please provide the answer to the questions and show work, e.g., by attaching screen shots and concise explanations, as needed. These problems are graded. 1. (6pt) Solve \"Problem 5.2: A 2-kg Physics textbook pressed against a wall moves\". ht_tps://www.compadreorg/Physlets/mechanics/probS 2.cfm 2. (6pt) Solve Problem 5.7: A 12kg box slides on a rough 26 .56" ramp\". httpszllwmncompadre.org/Physlets/mechanics/prob5_7.cfm Problems The following problems will be graded. For full credit, please show your work, including diagrams, algebraic equations, and enough written explanations that somebody who is not familiar with the problem could understand what you are doing. A final numerical answer is only one small part of a complete solution; an answer with no work shown will not be given any credit. 1. (5 pt). A xture with a mass of 3 kg is being suspended by anchoring two wires to the side walls in a room. You need to make sure that the wires are strong enough, so you decide to find the tensions F\" and Fm in them. If the wires are rated at a max tension of 15 N, is it safe to use them? 4. A bear sling, Fig. 4-40, is used in some national parks for placing backpackers' food out of the reach of bears. As the backpacker raises the pack by pulling down on the rope, the force F needed: (a) decreases as the pack rises until the rope is straight across. (b) doesn't change. (c) increases until the rope is straight. (d) increases but the rope always sags where the pack hangs. FIGURE 4-40 MisConceptual Question 4