Air at T1 = 300 K, P1 = 303 kPa and V1 = 0.5 m/s enters the venturi scrubbers as shown in the following figure. The air leaves the venturi at T2 = 220 K and P2 = 101 kPa; A1 = 0.6 m² and A2 = 0.1 m². Determine the horizontal force required to hold the venturi stationary. Assume R = 0.287 kJ/ (kg.K)

A cylinder having a mass of 40 kg with a radius of 0.5 m is pushed to the right without rotation and with acceleration 2 m/sec2. Determine the magnitude and location of the horizontal force P if the coefficient of friction is 0.30.

A 400 N block slides on the horizontal plane by applying a horizontal force of 200 N and reaches a velocity of 20 m/s in a distance of 30m from rest. Compute the coefficient of friction between the floor and the block.

Three blocks A, B and C are placed on a horizontal frictionless surface and are connected by chords between A, B and C. Determine the tension between block B and C when a horizontal tensile force is applied at C = 6.5 N. Masses of blocks are A = 1.2 kg, B 2.4 kg, and C = 3.1 kg.