46. The coefficient of friction depends on
47. A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span
48. In the lever of third order, load W, effort P and fulcrum F are oriented as follows
49. A number of forces acting at a point will be in equilibrium if
50. In ideal machines
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