Calendar: 1883-1884 Page 645

GENERAL LITERATURE AND SCIENCE 641 md when the latter must be preceded by the definite irticle Give the etymology of the words Equipage itoerc -Saroffe-Jtapetn- cfyatuite- Rantine wrought-iron rod 10 feet long and Jth of square inch in section is elongated so as to be on the point of breaking The tenacity of the metal is 67 200 pounds per square inch and the modulus of elasticity 29 000 000 pounds per square inch Determine the potential energy of the rod The mean section of stream is feet by feet its mean velocity 40 feet per minute there is fall of 10 feet on this stream at which is erected water-wheel whose modulus is 75 Determine the horse-power of the wheel roof whose total weight is is supported on rafters 20 feet long resting on walls 30 feet apart the weight of each wall is Ρ pounds Determine the thickness of each wall in order that the line of resistance may fall foot within the extrados sphere of metal whose specific gravity is 11 and radius inches rests on the top of cylinder 20 inches in height and 14 inches in radius so that the axis of the cylinder passes through the centre of the sphere Determine the specific gravity of the material forming the cylinder in order that the centre of gravity of the sphere and cylinder may be 16 inches from the base of the cylinder train weighing 20 tons is impelled along horizontal road by constant force of 400 pounds the friction is 10 pounds per ton What velocity will it have after moving from rest for 20 minutes what space will have been de- scribed and how much work will the engine have performed Explain the meaning of the terms coefficient of friction limiting angle of resistance mass of wrought iron weighing 500 pounds rests on plane of cast iron inclined at an angle of 60 to the horizon