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it are at rest on a frictionless incline, as shown in Figure P5.77. What are the ten- sions in the two strings? 3.0 kg 2 5.0 kg 78.)1111 Jason works for a mov- ing company. A 45 kg wooden crate is sitting FIGURE P5.77 on the wooden ramp of his truck; the ramp is angled at 11°. What is the magnitude of the force, directed parallel to the ramp, that he needs to exert on the crate to get it to start moving a. Up the ramp? b. Down the ramp? 20° 79. Il Two identical 2.0 kg blocks are stacked as shown in Figure P5.79. The bottom block is free to slide on a fric-
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