Calendar: 1885-1886 Page 700

692 APPLIED SCIENCES inclination of the arm is 120 Find the weight to be placed at the end of the shorter arm in order that this arm may be horizontal What is meant by energy Distinguish between poten- tial and actual energy If mass of 12 lbs raise mass of 80 lbs on wheel and axle where the radii of the wheel and axle are feet and inches respectively find the velocities of the masses when the larger has ascended through feet and find the acceleration 10 The sides of heavy triangle are and inches if it be suspended from the centre of the inscribed circle show that it will rest with the shortest side horizontal 11 If under an exhausted receiver cylinder sinks to depth equal to three-fourths of its axis find the alteration in the depth of immersion when the air of sp gr 0013 is admitted 12 Show that any system of forces acting on rigid body can always be reduced to resultant force and resultant couple in plane perpendicular to the direction of the force State and prove the properties of the central axis iBanufactitrtng &rt antt fHacijtttajn SECOND YEAR Sketch water ram and explain its action with and without an air vessel Sketch section through the cylinder and valves of hydraulic lift as applied for raising weights Give general description of the lift and explain the mode of working it by referring to your sketch Describe any method you know of for allowing ex- pansion and preventing collapse in the internal tube of single tube boiler and show how the area of the heating surface may be increased