Calendar: 1886-1887 Page 698

700 APPLIED SCIENCES Give full account of the mode of determining the coefficient of expansion of air under constant pressure under constant volume IV -IKttfiaitfaf SECOND AND THIRD YEARS An engine of is employed to wind up chain each foot of which weighs lbs the chain is suspended from the top of shaft the depth of which is 50 fathoms determine the number of seconds required to wind up each 100 feet of the chain uniform rod ft long weighing 12 lbs and carrying weight of 120 lbs at point ft from one end is supported on props at its extremities determine the pressure on the props rectangular mass of cast iron rests on an inclined plane of oak it is on the point both of sliding down and of overturning its base is ft square and its height is 462 ft determine the coefficient of friction between cast iron and oak Determine the equation to the line of resistance in river wall of brickwork the thickness of which is ft and which sustains the pressure of water whose surface is on level of the top of the wall Determine also the point where the line of resistance cuts the base when the height of the wall is 102 ft weight of 100 lbs is moved along horizontal plane by constant force of 20 lbs and describes 48 ft in the tirst 10 seconds determine the resisting forces per lb weight Determine also the time in which the weight will describe 200 ft Shew that the direction of the smallest force which will draw body down an inclined plane makes an angle with the plane equal to the limiting angle of friction