5/98 The two rotor blades of 32‐in. radius rotate counterclockwise with a constant angular velocity ω = ˙ θ = 2 rad / sec ω=θ˙=2 rad/sec about the shaft at O mounted in the sliding block. The acceleration of the block is aO = 10 ft/sec2. Determine the magnitude of the acceleration of the tip A of the blade when (a) θ = 0, (b) θ = 90°, and (c) θ = 180°. Does the velocity of O or the sense of ω enter into the calculation?

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.