085-1263404
30 Nov 2018
Question 1 A bullet of mass is fired with speed into a fixed block of wood and is brought to rest in a distance . Find the resistance to motion assuming it to be constant. Another bullet also of mass is then fired with speed into another fixed block of thickness , which offers the...
29 Nov 2018
Question 1 State the principle of the conservation of momentum. A car weighing tons and moving at m.p.h. along a main road collides with a lorry of weight tons which emerges at m.p.h. from a crossroad at right angles to the main road. If the two vehicles lock, what will be their velocity after the...
28 Nov 2018
I was teaching my students today how one could use higher derivates to determine the shape of a curve at a particular point. The problem that really can be confusing is the case when     I felt that a flow chart with pictures would be the best way to represent the process for deciding...
28 Nov 2018
Question 1 Show how to find the centre of gravity of a non-rectangular parallelogram. A thin uniform square sheet of metal of area square inches weighs ounces. At the corners , , , weights of oz., oz., oz., and oz., respectively are placed. Locate the centre of gravity of the system. Question 2   Establish...
27 Nov 2018
Question 1 A body is projected under gravity with initial velocity at an angle to the horizontal. Find in terms of , , (a) the maximum height attained, (b) the time required to reach that height, and (c) the distance it has travelled in a horizontal direction on reaching the maximum height. A man strikes...
26 Nov 2018
Question 1 (a) Represent any two velocities and by a vector diagram, and illustrate the vectors and . (b) When the sun, S, is above the horizon, an aeroplane glides in for landing with the sun behind, moving with a speed of m.p.h. along a path sloping down from the horizontal, as in the diagram....
25 Nov 2018
Question 1 Two pegs are fixed at points and in the same horizontal line. One end of a light string is attached to and the other end to . When masses of and lb. are attached to points and , respectively, on the string, the and . Find the tension, in lb. wt., in each...
24 Nov 2018
Question 1 A uniform ladder has a length of feet and weighs lbs. The end leans against a vertical rough wall (coefficient of friction ) and the other end is on rough horizontal ground (coefficient of friction ) at a distance of feet from the wall. A block weighing lbs. is placed on the ground...
23 Nov 2018
Question 1 and are two fixed pegs in the same horizontal line. One end of a light string is attached to and the other end to . When two masses are attached to the string, one at a point and the other at a point , the angles , , are , , , respectively....
22 Nov 2018
Question 1 A uniform ladder is put leaning against a rough vertical wall (coefficient of friction ), the bottom of the ladder being on a rough horizontal plane (coefficient of friction ). What is the least angle the ladder can make with the plane without slipping? Question 2 is quadrilateral lamina in which , ,...