Engineering Mechanics – Statics B. M. Mohammed

•8–65. Determine the smallest horizontal force P required to pull out wedge A.Thecrate has a weight of 300 lb and the coefficient of static friction at all contactingsurfaces is ms = 0.3.Neglect the weight of the wedge.

Engineering Mechanics – Statics B. M. Mohammed

8–66. Determine the smallest horizontal force P required to lift the 200-kg crate. Thecoefficient of static friction at all contacting surfaces is . Neglect the mass of thewedge. ms = 0.3

Engineering Mechanics – Statics B. M. Mohammed

8–71. Determine the smallest horizontal force P required to move the wedge to theright. The coefficient of static friction at all contacting surfaces is . Set and F = 400N. Neglect the weight of the wedge. ms = 0.3 u = 15°

Engineering Mechanics – Statics B. M. Mohammed

8–75. If the uniform concrete block has a mass of 500 kg, determine the smallesthorizontal force P needed to move the wedge to the left. The coefficient of staticfriction between the wedge and the concrete and the wedge and the floor is . Thecoefficient of static friction between the concrete and floor is . ms oe = 0.5 ms = 0.3