A weight 9 kN is initially suspended on a 150 m long cable. The cable weighs 0.002 kN/m. If the weight is then raised 100 m how much work is done in Joules.

The 7 m long beam, supported by a cable and resting on a smooth inclined surface at point A, is subjected to 
a 150 KN point load. Determine the position ‘x’ of the point load to maintain equilibrium. Neglect the weight of 
the beam. 

A separator accepts waste oil at 70% oil and 30% water by weight. The top product stream is pure oil while the bottom underflow contains 10% oil. If a flow of 20 gal/min is fed to the tank, how much oil is recovered?

. For quick preparation of a cup of hot chocolate in a cafeteria, cocoa powder and sugar

are added in a cup of water and the solution is heated by direct steam injection. If the

initial temperature of all the ingredients is 15 ℃, the final temperature is 95℃, the mass

of the solution is 150g initially, and the heat capacity of the solution is 3.8 kJ/kg ℃,

calculate how much saturated steam at 110 ℃ will be used. State your assumptions.