A 20 kg block is held in place on an incline plane as shown by a rope that passes over a frictionless pulley at B and then over a fixed cylinder at C where the coefficient between the rope and the fixed cylinder is 0.2. Given an angle of incline, A = 25°, if a force of P = 200 V is applied to the end of the rope, (a) Will the block move if the coefficient of static friction between the block and the inclined surface is M, = 0.56? (b)If impending motion exists, will the block tip or slip?

Question 3(a) The non uniform XYZ bar which weighs 155 kg has its centre of gravity G at a distance 4 m from X. This bar rests on a homogeneous crate P. The static coefficient of friction between the bar and the crate is 0.31 while the same between the crate and the floor is 0.22. Determine the mass of the lightest crate P (in kilograms) that can be used to support this non uniform bar in the position shown in Figure 3. The height of the crate is 4.32 m and the length of the bar is 8.59 m. 4 m 3 m - 1 m - Figure 3 Question 3(b) Take an example from everyday life where you can identify the application of the concepts we learn in the "Dry friction" module. Sketch this example and discuss about the effect of friction on that particular scenario. Sketch does not have to be drawn to a scale. (Description should be 250 words or less).

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A horizontal force is exerted on a 150 lb chair at rest. The coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.