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  Item Reference: KCLCAL-1865-1866-546

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548 APPLIED SCIENCES JUNIOR SCHOLARSHIP -natural tloiop Explain what is meant hy the Triangle of Forces and deduce it from the Parallelogram of Forces weight of 35 lbs is kept in equilibrium on an inclined plane by force of 21 lbs parallel to the plane find the elevation of the plane and the pressure on it Define lever Prove the principle of moments for two parallel forces acting on lever An upward force of lbs is required to support weight of 24 lbs on lever the distance between the weights being feet find the position of the fulcrum and the pressure on it Explain how to find the centre of gravity of body ex- perimentally When is body in stable equilibrium square is inscribed in an isosceles triangle whose sides are and find the distance of the centre of gravity of the remainder from the vertex of the triangle If squares be in- scribed in the successive isosceles triangles so formed until it is no longer possible to describe them find the distance of the centre of gravity of the part without the squares from the vertex of the triangle What is work and how is it measured In the first system of pulleys where each pulley hangs by separate string find the relation between the power and the weight If there are movable pulleys what must be the relation between their distances from another in order that they may all come in contact at the same instant Find the relation between Ī” and in this system when one of the strings is nailed to the pulley round which it passes How is accelerating force measured Show that the space described by body in time under the action of constant force producing an acceleration is ffi If body be projected upwards with velocity of 81 feet per second how high will it rise and where will it be at the end of seconds
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