4. A horizontal beam 4.8m long of mass 18kg is supported by pillars 0.2m from each end. There is man of mass 85kg standing 1.7m from one end of the beam. Overleaf draw a diagram showing the forces
acting on the beam in this equilibrium condition. Calculate the magnitudes of the loads carried by
each support.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.