A turbine is supplied with 22,500 lb./hr of steam at 166 psia and 480°F with an initial speed of 6,000 fpm at an elevation of 5 ft. above the exhaust outlet. Radiation and frictional losses are 140,000 Btu/hr. At the entrance h1 = 1261.8 Btu/lb. At the exit, p2 = 3 in. Hg abs., v2 = 24,000 fpm, and h2= 1001.5 Btu/lb. Compute the work in horsepower.