The spool has a mass of 100 kg and a radius of gyration k g = 0.3 m . if the coefficients of static and kinetic friction at a are μ s = 0.2 and μ k = 0.15 , respectively, determine the angular acceleration of the spool if p = 600 n .

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.