Calendar: 1883-1884 Page 669

CLOTHWORKERS SCIENCE EXHIBITION 665 round column stands on level plain Show clearly why it is less easily overthrown if it is short and wide than if it is tall and narrow State the proposition known as the Triangle of Forces Apply it to determine the horizontal force necessary to support weight of 28 lbs on smooth plane which is inclined at half right angle to the horizon What is meant by the moment of force' about point and how is it calculated uniform flat rod weighing lbs and 13 ft long is laid across table ft broad so as to project ft on one side and ft on the other How near to either end may weight of lbs be placed without upsetting the rod uniform rod 10 ft long is bent at right angles at point it from one end Find the distance of the centre of gravity of the rod from the two portions of it 10 If several forces which do not balance act in the same plane upon different points of solid body one point of which is fixed what condition must be fulfilled in order that the body may be in equilibrium Show that this condition cannot be fulfilled unless the fixed point is in the plane of the forces 11 weight rests upon smooth horizontal plane and is acted upon by force equal to the weight of lbs in direction inclined obliquely downwards at an angle of 30 to the horizon Find the horizontal force required to prevent motion III 5tc5 War Scholarships and Parts and II for the Clothworkers and Sambrooke Exhibitions What is meant by the 'acceleration due to force' and upon what does its magnitude depend If the velocity of body increase from 12 to 13 feet per second while it moves over distance of feet what is the