HW3: A body of weight 500 N is lying on a rough plane inclined at an angle of 25° with the horizontal. It is supported by an effort (P) inclined at an angle of 30° with the plane as shown in Figure. Determine the minimum and maximum values of P, for which the equilibrium can exist, if The coefficient of friction between the block and the plane is 0.25 30° 25° 500 N

Q3. An aluminium-alloy cylinder of internal diameter 10.000cm and wall thickness 0.50cm is shrunk onto a steel cylinder of external diameter 10.004cm and wall Thickness 0.50cm. If the values of Young's modulus for the alloy and the steel are 70 GN/m² and 200 GN/m", respectively, estimate the circumferential stresses in the cylinders and the radial pressure between the cylinders. SPARK4

The crate, which has a mass of 100 kg, is subjected to the action of the two forces. If it is originally at rest, determine the distance it slides in order to attain a speed of 3.5. The coefficient of kinetic friction between the crate and the surface is μ k= 0.24.