D = 2,500 lb/ft (excluding self weight) L = 2,500 lb/ft 12 ft-

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g= 9.81m/sec? A B 250 3-) Two blocks of A and B are tied together by an inextensible cable which is passing over a frictionless pulley. Block B has a mass of 25 kg. The coefficients of friction between the blocks and the surfaces are given as 4 = 0.15 for static and fik = 0.10 for kinetic. Determine a) the maximum mass of block A that can not prevent the motion b) the tension in the cable for the motion corresponding this mass.

BUOYANCY: AN INVERTED CONE 10 CM ACROSS THE BOTTOM AND 12 CM HEIGHT  WITH SPECIFIC GRAVITY OF 0.9 FLOATS IN WATER WITH SPECIFIC GRAVITY OF 1.0. (NOTE 1 M = 100 CM) The draft in water of the cone is The displaced volume is The above volume is The total volume of the cone is

The closed cylindrical tank is filled with milk, for which density = 1030 kg/m3. If the inner diameter of the tank is 1.5 mm determine the unbalanced force when the truck accelerates at 0.8 m/s2.

The speed of the pickup truck's engine is controlled by the Porter governor with 4 arms of equal length, and pivot on the axis of rotation. Each ball has a mass of 4 kg and the mass of the central load on the sleeve is 20 kg. The radius of rotation of the ball is 150 mm when the governor begins to lift, and 200 mm when the governor is at maximum speed. The initial angular speed of the engine's crank is 14 rad/s, and it has reached a maximum speed at an acceleration of 0.4 rad/s? after 5 seconds. 2.1. If the speed of the crank of an engine is equal to the speed of its governor, calculate the angle between the upper arm and axis of rotation (a) when the governor starts to lift and when it is at maximum speed. 2.2. Prove that the length of the governor's arms is equal.

For a short period of time, the frictional driving forceacting on the wheels of the 2.4-Mg van is FD= 600t 2 N, where t is in seconds. If the van has a speed of 20 kph when t=0. Determine the following: a. The net impulse of the systemwhen t = 6s. b.Speed when t = 5s.

3. Two coaxial cylinders 250 mr high have a liquid in between them, the outer cylinder had internal diameter 100 mm and the internal cylinder has external diameter 97.5 mm. Find the viscosity of liquid which produces a torque of 1 Nm upon the inner cylinder when outer one rotates at 90 rpm.

A cylinder of 0.40-ft radius rotates concentrically inside a fixed cylinder of 0.42-ft radius. Both cylinders are 1-ft long. Determine the viscosity in terms of Reyn of the liquid that fills the space betweent the cylinders if a torque of 0.650 lb-ft is required to maintain an angular velocity of 60 rpm.